The Yale P114 Patio Door Lock offers simple, effective security. Suitable for most sliding patio doors. Push to lock action (no key required). Offers an optional ventilation position. Features security clutch-head screws. Available in 3 finishes: Chrome, Grey or White 2 Year Guarantee This Yale P114WE Patio Door Lock is finished in White and come with a 2 Year Guarantee. 2 x Keys
The Squire Vulcan range of padlocks has been designed as an upgrade from the already excellent CP and Stronglock ranges. The Vulcan padlocks are constructed utilising a dual compound method of outer die cast body sleeve covering die cast internal mechanisms. This provides extra resistance to attack. Added to this, the Vulcan padlock shackles are made from boron alloy, providing excellent corrosion resistance. They are designed to secure garages, vans, sheds, lock-ups, toolboxes and numerous other applications where added security is required. These combination padlocks are recodable and have a patented combination mechanism that provides 10,000 combinations. Available in open, closed and long shackle variants. ALL models carry the Squire 10-year guarantee. CRIMESTOPPERS supported.Specifications: Type: Open shackle.Size: 60mm.
Henry Squire Solid Hardened Steel Padlock combines compact design with market leading product performance in the 50mm version, while the 65mm are tested to the highest CEN grades 5 & 6. All models are designed to resist the harshest of attack, these locks function reliably in the worst weather conditions. Hardened Boron alloy steel shackles. Re-keyable 6-pin tumbler in both 50mm & 65mm versions giving over 250,000 key differs. The 50mm is version also available with a 5-pin tumbler. Available open and closed shackle. Keyed alike and masterkeyed available to order. CEN rated Now available in customer focused packaging: ‘@Work @Home @Leisure’ CRIMESTOPPERS supportedThe Henry Squire SS50S Stronghold Solid Steel Padlock 50mm has a 6 pin tumbler and offers upto 260,000 different key variations. It has a secuirty rating of CEN 4. Specification Body Width: 50.0mm.Body Thickness: 26.0mm.Shackle Diameter: 10.0mm.Vertical Shackle Clearance: 16.0mm.Horizontal Shackle Clearance: 22.0mm.
DEFENDER by SQUIRE Aluminium Padlocks with a hardened steel shackle. Comes with a 2 year guarantee.This DEFENDER Aluminium Padlock 40mm is ideal for sheds and medium boxes. Comes complete with 2 keys.
The DEFENDER range of Brass Padlocks give protection against an opportunist attack. The range includes sizes from 20mm to 60mm with standard clearance shackles and a 40mm long shackle version. 30mm and upwards have Double Locking Hardened Steel Shackles. 40mm and upwards have 5-pin Cylinders. All sizes are available with a Keyed Alike option for extra convenience. Comes complete with 2 keys and a 2 year guarantee.1 x DEFENDER by SQUIRE Brass Padlock Twinpack 40mm
The MasterLock 8195 Black High Security U-Bar offers maximum security with its hardened steel shackles. The disc cylinder also provides a strong level of resistance to attack and prying, and has a dust cover to protect the lock against the elements. All Master Lock bike locks with locking mechanism have a Lifetime Warranty against mechanical failure. Sold Secure Bicycle Gold certified. This high level of quality is recognised by the main European testing agencies. Specification Height: 210mm.Clearance: 110mm.Diameter: 13mm.
Replacement door handles for multi-point locks with 92mm lock centres, which can be used on PVCu, composite and wooden doors. Multiple fixing hole positions to cover most brands of locks. Spindles and fixing screws provided to fit different door widths. Smooth and durable handle operation. Durable finish and easy to fit.Finish: Polished Chrome
The Yale 1109 series replacement rim cylinders are for use with surface mounted locks, such as nightlatches, operating from a tailbar. They are used to provide key access from one side of a door and are suitable for doors 38mm to 57mm in thickness. The tailbar can be cut to suit the thickness of the door.This Yale P1109CH Replacement Rim Cylinder comes in Polished Chrome. Keyblank No.8Supplied with two keysRim Finish: Polished Chrome Pack: Visi Pack
The Yale P125 hinge bolts can not be seen from inside or outside so giving maximum security to your home and are ideal for outward opening doors. Automatically engage and disengage when opening and closing the door. Hinge bolts will resist hacksawing and attempts to remove the door from its frame and can be fitted in minutes, simply place x 2 per door just below hinges to secure the door from being removed.This Yale P125 hinge bolt is finished in Brass
Meridian Six Panel Lantern with PIR motion detection for added security; 120° 10m detection area. Manufactured from die-cast aluminium with a black powder-coated finish. Fitted with a clear, impact-resistant polycarbonate diffuser. Suitable for outdoor use, weather-resistant IP44 rating. Requires an E27 light bulb, max. rating of 60W (not supplied). Fully compatible with LED lamps. Specification: Input Voltage: 220-240V - 50/60HzMax. Wattage: 60WBulb Fitting: E27Dimmable: NoIngress Protection: IP44Dimensions: 212 x 171 x 356mm
The Union 2134E British Standard 5 lever mortice deadlocks are ideal for external timber doors hinged on the left or right with the keys being suitable for doors up to 54mm thick. The deadbolt is locked or unlocked by the key from either side, and a 20mm deadbolt for secure positive deadlocking and additional resistance against attack. 2134E features an anti-pick, anti-saw and anti-drill security, Chamfered bolt design that increases the performance of the lock under side load testing. The chamfer of the bolt also makes drilling attack more difficult, Supplied with covered escutcheon to match forend. The 2134E series locks are recommended by insurance companies, kitemarked to BS3621: 2007(British Standard) and has been approved by the police Secured by Design initiative. They are also covered by a 15 Year guarantee. Deadbolt Brass, with hardened steel rollersRebate Kit 2954 (13mm, 19mm or 25mm)Supplied with 3 steel nickel plated keysKey Blank Number KB430 A deadlock has a single deadbolt which is locked or unlocked and locked by means of a key from either side, whereas, a sashlock has both a deadbolt and a latch which is operated from either side by a lever handles. The security level of mortice deadlocks or sashlocks ranges from 2-5 levers. The higher the number of levers the more secure the lock is.Forend Finish: Satin Chrome (Striking Plate Finished to match forend)Case Size: 79.5mm x 71.5mm (3 in)Backset: 57.5mm This is the measurement from the edge of the door to the centre of the keyhole.Pack Type: Boxed
3G-110 C-Series 5 detainer deadlocks are for use in high security applications for timber doors hinged on the left or the right up to 50mm thick. The detainer style lock provides a higher number of key combinations than lever locks. The deadbolt operation can be operated from either side and is protected with hardened steel rollers. Resistant to force, drill, pick and saw attacks and the thick striking box is painted to match the forend.Case size – 73mm, Backset - 44mm, Bolt throw - 14mm.Finish Brass
The DEFENDER range of Covered Laminated Padlocks provide both security and weather protection. The padlocks use a 5-pin cylinder to provide extra key security, plus a hardened steel shackle, utilising a double locking mechanism, to provide extra resistance to physical attack. The all-weather covering is designed to be provide protection in areas where the elements are particularly aggressive. Ideal for Sheds and Garages. Currently available in 2 sizes to meet most needs, with option to have Keyed Alike suites for extra convenience. Comes complete with 2 keys and a 2 year guarantee.
The Master Lock Excell™ Laminated Steel Padlocks are made with cutting edge technology to deliver unprecedented security. They feature tough cut patented octagonal boron carbide shackles which are 50% tougher to cut than hardened steel, and dual ball bearing locking mechanisms for maximum pry resistance. The laminated steel padlocks are built for strength, with stainless steel and zinc outer components for exceptional weather resistance. They have either a precision 4-pin or 5-pin cylinder and recessed rivets that are chisel resistant. Supplied with 4 keys and a Lifetime Warranty against mechanical failure. Suggested uses: gates, sheds, storage units, fences, containers and chains.The Master Lock M5EURTRILF has the following specifications: 3 x 50mm Excell™ laminated steel padlocks - 38mm Octagonal boron carbide long shackle, 9mm diameter - 4-pin tumbler cylinder - dual ball bearing locking - keyed alike
MasterLock Garden Security Kit is made up of a braided steel cable, weather tough padlock and anchor point. Use the cable to link through several items, pass through the anchor point and lock with the padlock. One stop solution, and is ideal for securing all garden furniture and equipment. Length of shackle: 30mm.Length of cable: 4.5m.Colour: Black.Usage: Suitable for outdoor use.Security level: 6. Guarantee: Lifetime guarantee included.
The UNION Replacement Variable Power Door Closer is the easy way to replace Briton 2003 series door closers and keep your existing door. It uses identical fixing dimensions and footprint to popular UK door closer designs, including Briton 2003, 2004 and 2003V. Sympathetically designed to blend with other traditional door closers that have been used or are currently fixed to other doors nearby. Ideal for retrofit but also highly suited to 1st fit applications. Suitable for both fire resistant timber and metal doors, as well as other internal doors. Fully tested as both size EN3 and EN4 in all 3 fixing positions. Specification: Finish: SE SilverMax. Door Width: 1100mm (All 3 Install Positions)Max. Door Weight: 80kg (All 3 Install Positions)Max. Opening Angle: 130°
The Master Lock Garage Protector Kit has a bar that locks onto a solid steel base and a solid hardened steel hidden shackle padlock with a 6-pin tumbler cylinder. It protects 'Up and Over' garage doors and provides a high security horizontal barrier at the door base. Single ground fitting with expanding security rawl bolts included.
The Faithfull Combination Padlock has a solid brass body with a 4-pin brass tumbler mechanism. It has a hardened and plated steel shackle encompassing a self locking action. The 4-digit combination system can be simply changed at any time to any one of 10,000 possible combinations. To change the number, simply turn the shackle 180 degrees and push into padlock body and rotate the dials to the desired new number1 x Faithfull Brass Combination Padlock 38mm
The Union 2234E 5 Lever British Standard Mortice sashlock is ideal for timber doors hinged on the left or right and the keys are suitable for doors up to 54mm thick. The 20mm deadbolt is locked or unlocked by the key from either side, for secure positive deadlocking and additional resistance against attack. This 2234E features an anti-pick, anti-saw and anti-drill security, Chamfered bolt design that increases the performance of the lock under side load testing. The chamfer of the bolt also makes drilling attack more difficult, Supplied with covered escutcheon to match forend. This lock has an unique pierced casing to accept bolt through door furniture. The 2234E series locks are recommended by insurance companies, kitemarked to BS3621: 2007 (British Standard) and has been approved by the police Secured by Design initiative. They are also covered by a 15 Year guarantee. Deadbolt Brass, with hardened steel rollersRebate Kit 2964 (13mm, 19mm or 25mm)Supplied with 3 steel nickel plated keys The security level of mortice deadlocks or sashlocks ranges from 2-5 levers. The higher the number of levers the more secure the lock isForend Finish: Satin Chrome (Striking Plate Security box type, finished to match forend) Case Size: 67mm x 111mm (2.5in) Backset: 45mm This is the measurement from the edge of the door to the centre of the keyhole. Centre: 57mm This is the measurement from the centre of the follower, which operates the handles, to the centre of the keyhole. In the UK this is commonly 57mm. Pack: Boxed
The Yale PM444 series security door bolts are concealed (mortice fixed) into the door with a bolt which throws into the door frame. Operated by using the key supplied giveing added securiy and extra protection to your home.The Yale YALPM444CH Door Security Bolt are finished in chrome, has a 2 year guarantee and is supplied with 1 x key
The Yale 85 series deadlocking standard nightlatch security locks are some of the most widely-used front door latches. They are key operated from the outside and lever handle operated from the inside. The latch automatically deadlocks on closing the door and the snib function (bolt hold back button) enables the latch to be held back. The inside handle can also be deadlocked by a reverse turn of the key in the cylinder giving additional security (when deadlocked in this manner the latch cannot be opened from the inside only from the outside with the key) Supplied with 1109 Cylinder. The 85 series security nightlatches have a 40mm backset, this is the measurement from the edge of the door to the centre of the keyhole. Locks with a 40mm backset are normally used where there is restricted space, such as on a narrow glass panelled door.This Yale YAL85BLXPL has a hardened Case Finish in Brasslux and the Cylinder is Finished in Polished Brass. The lock is covered by a 2 Year Guarantee and has a High Security Rating.Pack: Boxed
Yale's maximum security BS2 nightlatches are British Standard approved to ensure the highest level of security for timber external doors. They are Kitemarked to BS 3621:2007 and are recommended by insurance companies. These security nightlatches have been approved by the Police Secured by Design initiative. The lock is key operated from the outside and both key and lever handle operation from the inside with the internal handle being lockable for increased security. The latch automatically deadlocks on closing the door and the snib function enables the latch to be held back. The lock uses a 6 pin high performance cylinder, and has a 20mm bolt which is anti-carding. It also has a 10 year guarantee. The BS2 nightlatches have a 40mm backset, this is the measurement from the edge of the door to the centre of the keyhole. Locks with a 40mm backset are normally used where there is restricted space, such as on a glass panelled door Case Width: 89mmCase Height: 90mmCase Depth: 33mm.This Yale PBS2BLX has a hardened case finished in BrassluxSupplied with 2 x keys
Union's StrongBOLT 5 Lever Mortice Deadlocks have a radius inner forend for ease of installation. They can be installed in many UK mortices without the need for additional carpentry or spoiling the edge of the door. The chamfered bolt design increases the performance of the lock under side load testing and also makes drilling attack more difficult. Anti-pick and keyhole protection prevents forced entry by picking, and the hardened steel pins provide resistance to attack from sawing. The deadbolt can be locked or unlocked by the key from either side. This deadbolt measures 20mm for secure positive deadlocking and additional resistance against attack. 2105S can be keyed alike with 2205S.Forend finish: Polished brass.Case size: 81 x 89mm.Backset: 57mm. This is the measurement from the edge of the door to the centre of the keyhole.
The Master Lock ProSeries® Weather Tough® Padlocks is designed to endure the toughest security applications by providing extra protection against corrosion, abuse and attack. They have tough boron alloy shackles, dual ball bearing locking mechanisms for maximum pry resistance and layered laminated steel cores for strength. Ideal for harsh outdoor conditions, the Weather Tough® xenoy outer casing delivers excellent weather resilience, protecting the lock from water, ice, dirt and grime. The precision pin cylinder delivers optimal pick resistance and is protected by a snap-on cap. All Master Lock Pro Series™ Padlocks are supplied with a minimum of 2 keys and a Lifetime Warranty against mechanical failure. Suggested Uses: gates, sheds, storage units, fences, containers and chains.This Master Lock ProSeries® Weather Tough® Padlock has a precision 5-pin cylinder and the following specifications: Body Width: 54mmShackle Thickness: 8mmShackle Width x Height: 63 x 22mmType: Keyed Alike, Key Retaining
Set of 2 Master Lock TSA zinc combination padlocks which are a tough and dependable security solution. With a modern design and variety of colours (Purple, Black, Red and Blue), they are ideal for traveling around the globe. 3-digit resettable, no reset key is needed to change the combination. All Master Lock padlocks are supplied with a Lifetime Warranty against mechanical failure.
Replacement door handles for multi-point locks with 92mm lock centres, which can be used on PVCu, composite and wooden doors. Multiple fixing hole positions to cover most brands of locks. Spindles and fixing screws provided to fit different door widths. Smooth and durable handle operation. Durable finish and easy to fit.Finish: White
The Yale 77 Series Traditional Nightlatches are the Original Yale Lock with classic styling. The deadlocking snib function enables the latch to be held back or deadlocked internally. The nightlatch is key operated from the outside and has a knob handle for operation from inside. The 77 Series Nightlatches have a 60mm backset, this is the measurement from the edge of the door to the centre of the keyhole. Supplied with 1109 external cylinder.This Yale 77CH has a hardened case finished in Polished Chrome and the Cylinder is also finished in Polished Chrome Pack Type: BoxedSupplied with 2 x keysSecurity Rating: StandardNot recommended for glass panelled doors, unless used in conjunction with a 5 lever mortice lock
The Yale 89 series deadlocking standard nightlatch security locks are some of the most widely-used front door latches. They are key operated from the outside and lever handle operated from the inside. The latch automatically deadlocks on closing the door and the snib function (bolt hold back button) enables the latch to be held back. The inside handle can also be deadlocked by a reverse turn of the key in the cylinder giving additional security (when deadlocked in this manner the latch cannot be opened from the inside, only from the outside with the key). Supplied with 1109 Cylinder. The 89 series security nightlatches have a 60mm backset, this is the measurement from the edge of the door to the centre of the keyhole.This Yale P89DMGPB has a hardened Case Finish in Dark Metalic Grey and the Cylinder is Finished in Polished Brass. The lock is covered by a 2 Year Guarantee and has a High Security Rating. Pack: Visi.
The UNION FastLatch, is a range of push fit latches and privacy bolts for residential applications. The FastLatch Easy Fit Bolt is for use with an emergency release or bathroom turn with a 5mm square spindle. Bolt through fixings centres 38mm. Three times faster to fit than a standard latch. Minimal skill level required to install and the side ribs provide a secure fit, no visible fixings. It has an attractive, modern design which suites with other door furniture, providing a stylish interior finish. Rigorously tested to 800,000 closing cycles, to ensure excellent reliability, so you can rely on FastLatch for decades of use. Bolt through fixing holes to allow a more secure fixing of door furniture over time reducing wear and tear on the door. Supplied with both round and square corner strikes, so the correct option can be tailored to either new frame preparation or provide a retrofit solution. Also supplied with a splinter guard to hide frame preparation resulting in a professional finish. Choice of 3 high-quality finishes: Polished Brass, Polished Chrome and Satin Nickel.Available in 60mm (2.5in) and 73mm (3in) sizes. Comes with a 5 year guarantee.This UNION FastLatch Easy Fit Bolt has the following specifications: Finish: Polished BrassCase Size: 73mmBackset Size: 57mm
The Yale 89 series deadlocking standard nightlatch security locks are some of the most widely-used front door latches. They are key operated from the outside and lever handle operated from the inside. The latch automatically deadlocks on closing the door and the snib function (bolt hold back button) enables the latch to be held back. The inside handle can also be deadlocked by a reverse turn of the key in the cylinder giving additional security (when deadlocked in this manner the latch cannot be opened from the inside, only from the outside with the key). Supplied with 1109 Cylinder. The 89 series security nightlatches have a 60mm backset, this is the measurement from the edge of the door to the centre of the keyhole.This Yale 89DMGSC has a hardened Case Finish in Dark Metalic Grey and the Cylinder is Finished in Satin Chrome. The lock is covered by a 2 Year Guarantee and has a High Security Rating.Pack: Boxed
The Union 2277 3 Lever mortice sashlocks are ideal for timber doors hinged on the left or right and are suitable for doors up to 54mm thick. The deadbolt is locked or unlocked by the key from either side with the latch bolt withdrawn by lever handle from either side. The locks are also pierced to accept bolt through furniture. These locks have a 12.5mm anti-saw brass deadbolt, with hardened steel rollers and the striking plate is finished to match the forend. Rebate Kit 2969 (13mm, 19mm or 25mm)Keying Groups May be supplied to pass, differ and keyed alike with 2077, 2157, 2277 and 2477Supplied with 2 steel nickel plated keysKeying 100 standard differs (numbers from M101M to M200M) A deadlock has a single deadbolt which is locked or unlocked and locked by means of a key from either side, whereas, a sashlock has both a deadbolt and a latch which is operated from either side by a lever handle. The security level of mortice deadlocks or sashlocks ranges from 2-5 levers. The higher the number of levers the more secure the lock is.Case Size 77.5mmBackset 57mmForend Brass
These Union 2294 2 lever mortice bathroom sashlocks are suitable for timber doors hinged on the left or right (up to a thickness of 54mm) and requiring turn and emergency release functions. They can be deadbolt locked or unlocked by separate turn (not supplied) from inside and also deadbolt unlocked by separate emergency release from outside (not supplied). The 11mm reversible latchbolt bolt is withdrawn by lever handle from either side and the two way action is suitable for lightweight knobs or sprung handles. Please note these locks are not suitable for unsprung lever handles. Case Steel, black powder coatFollower 8mm square, 5mm turn followerNot suitable for bolt through fixing A deadlock has a single deadbolt which is locked or unlocked and locked by means of a key from either side, whereas, a sashlock has both a deadbolt and a latch which is operated from either side by a lever handles. The security level of mortice deadlocks or sashlocks ranges from 2-5 levers. The higher the number of levers the more secure the lock is.Forend Finish: Polished Brass Finish (Striking Plate Security box type, finished to match forend)Case Size: 63mm x 102mm (2.5in)Backset: 44.5mm This is the measurement from the edge of the door to the centre of the keyhole.Centre: 57mm This is the measurement from the centre of the follower, which operates the handles, to the centre of the keyhole. In the UK this is commonly 57mm.Pack: Boxed
The Union 2134E British Standard 5 lever mortice deadlocks are ideal for external timber doors hinged on the left or right with the keys being suitable for doors up to 54mm thick. The deadbolt is locked or unlocked by the key from either side, and a 20mm deadbolt for secure positive deadlocking and additional resistance against attack. 2134E features an anti-pick, anti-saw and anti-drill security, Chamfered bolt design that increases the performance of the lock under side load testing. The chamfer of the bolt also makes drilling attack more difficult, Supplied with covered escutcheon to match forend. The 2134E series locks are recommended by insurance companies, kitemarked to BS3621: 2007(British Standard) and has been approved by the police Secured by Design initiative. They are also covered by a 15 Year guarantee. Deadbolt Brass, with hardened steel rollersRebate Kit 2954 (13mm, 19mm or 25mm)Supplied with 3 steel nickel plated keysKey Blank Number KB430 A deadlock has a single deadbolt which is locked or unlocked and locked by means of a key from either side, whereas, a sashlock has both a deadbolt and a latch which is operated from either side by a lever handles. The security level of mortice deadlocks or sashlocks ranges from 2-5 levers. The higher the number of levers the more secure the lock is.Forend Finish: Brass (Striking Plate Finished to match forend) Case Size: 67mm x 71.5mm (2.5in) Backset: 45mm This is the measurement from the edge of the door to the centre of the keyhole. Pack Type: Boxed
Union's StrongBOLT 3 Lever Mortice Sashlocks feature an innovative, easily reversible radius latch that uses the Union SwitchLatch technology, meaning that no tools are required. This is both simple to use and time-saving. An anti-rattle adjustable strike allows on-site fine tuning. The sashlocks have a plastic splinter guard and a radius inner forend for ease of installation. They can be installed in the many UK mortices without the need for additional carpentry or spoiling the edge of the door. The chamfered bolt design increases the performance of the lock under side load testing and also makes drilling attack more difficult. Anti-pick and keyhole protection prevents forced entry by picking, and the hardened steel pins provide resistance to attack from sawing. The deadbolt can be locked or unlocked by the key from either side. This deadbolt measures 14mm for secure positive deadlocking and additional resistance against attack. 2203S can be keyed alike with 2103S.Forend finish: Stainless steel. Case size: 68 x 109.6mm. Backset: 45mm. This is the measurement from the edge of the door to the centre of the keyhole.Centre: 57mm. This is the measurement from the centre of the follower, which operates the handles, to the centre of the keyhole.
Union's StrongBOLT 5 Lever Mortice Sashlock feature an innovative, easily reversible radius latch that uses the Union SwitchLatch technology, meaning that no tools are required. This is both simple to use and time-saving. The sashlocks have a radius inner forend for ease of installation. They can be installed in the many UK mortices without the need for additional carpentry or spoiling the edge of the door. The chamfered bolt design increases the performance of the lock under side load testing and also makes drilling attack more difficult. Anti-pick and keyhole protection prevents forced entry by picking, and the hardened steel pins provide resistance to attack from sawing. The deadbolt can be locked or unlocked by the key from either side. This deadbolt measures 20mm for secure positive deadlocking and additional resistance against attack. 2205S can be keyed alike with 2105S.Forend finish: Stainless steel. Case size: 81 x 109.6mm. Backset: 57mm. This is the measurement from the edge of the door to the centre of the keyhole.Centre: 57mm. This is the measurement from the centre of the follower, which operates the handles, to the centre of the keyhole.
The Yale PM246 2 lever mortice sashlocks offers a standard level of security and are suitable for use on internal timber doors. The deadbolt is locked or unlocked by key from either side. These sashlocks also have a 12.5mm deadbolt, and are suitable for use on internal doors where privacy is required. A deadlock has a single deadbolt which is unlocked and locked by means of a key from either side, whereas, a sashlock has both a deadbolt and a latch which is operated from either side by a lever handles. The security level of mortice deadlocks or sashlocks ranges from 2-5 levers. The higher the number of levers the more secure the lock is.Finish: Polished Brass Case Size: 80mm x 102mm (3 in) Backset: 57mm This is the measurement from the edge of the door to the centre of the keyhole. Centre: 57mm This is the measurement from the centre of the follower, which operates the handles, to the centre of the keyhole. In the UK this is commonly 57mm.
