Kryptonite Messenger Mini + U-Lock with Extender Sold Secure SilverFeatures11mm hardened MAX-Performance steel shackle provides a lighter weight lock while maintaining the security level of Evolution MinisIncreased shackle dimensions allows for a wider range of lock up scenariosWheel extender can secure either the front or back wheel while the Mini captures your frame and the immovable objectReinforced cuff over crossbar and cylinder for additional securityHigh security disc-style cylinder is pick and drill resistantNew patent pending bentfoot double deadbolt designNew rotating dust cover with stopper plug2 stainless steel keys with coiled wrist key chainsKey Safe ProgramRated 7/10 on Kryptonite's security scaleOptional ATPO - £ 1,500Product dimensions: 3.75” x 6.5" (9.5cm x 16.5cm) - Wheel extender: 3.25" x 3.75" (8.3cm x 9.5cm)Product weight: 2.6 lbs (1.18 kgs)Sold Secure Bicycle Silver certified