• Anti-snap Protection: Sacrificial cuts and hardened steel bar.
• Anti-bump Resistance: Features 'V pins' on both ends to resist bumping.
• Anti-pick Defence: Four special anti-pick pins on each end resist picking.
• Anti-drill Safeguards: Protected against drilling by anti-drill pins and balls on both ends.
• High Security Key: Combines dimples and groove with 100,000 differs.

The Yale Superior cylinder offers superior resistance against all current known attack methods such as cylinder bumping, snapping, drilling and picking. In addition, the Yale laser cut dimple key offers enhanced security as the horizontal keyway of a dimple lock is very small it makes insertion and use of traditional pick tools very difficult. The Yale Superior cylinder lock carries the latest BS kite mark KM559658 with Secure by Design approved TS007:2014 1* Star rating and has been independently tested and meets the prestigious British Standard BS EN1303:2015. FEATURES: * Unique high precision 12 telescopic pin tumbler system * Secure-By-Design approved TS007:2014 1 * Kite marked security euro cylinder * Over 100,000 combinations for ultimate key security * EN1303:2015 - Grade 2 attack pass - the highest category * Kitemarked approved with BS EN1303:2015 accreditation * Meets BS3621 for insurance purposes * 3 security keys supplied with key card per single cylinder WHAT'S IN THE PACK? 1 x Yale Superior Series Euro Profile Cylinder Lock 1 x Key Card 3 x Laser cut dimple keys as standard 1 x Fixing Screw. HOW DO I MEASURE A DOOR CYLINDER? The size is determined by the thickness of the door and handle, many sizes are available so you need to be careful with your measurements (one size will not fit all). For accuracy remove your old cylinder to measure it. Your new cylinder should protrude by no more than 5mm from the handle back plates. Measure from one end of the cylinder to the middle of the central screw hole. Then measure from the other end to the middle of the central screw hole. Measure the overall cylinder length from end to end. The length of the cylinder should equal the sum of measurements when added together. PLEASE NOTE: These cylinders feature anti-snap security on both sides therefore ordering a 40/55 cylinder is the same as ordering a 55/40 cylinder.