Based on the legendary Evolution Mini-5 U-Lock, the new Messenger Mini has a wider and longer shackle to increase the number of places it is possible to lock your bikeBut it still fits in your back pocket!The MAX-Performance steel shackle allows for a reduced diameter, while maintaining the same security as the Mini-5Durability has been increased with the addition of the new disc style cylinder - featuring anti-rotation discs - reducing the chance your key will get stuck or break in the cylinderSupplied with keys on a convenient wrist bandAlso included is the Mini + wheel extender for more variety in how and where you lock your bikeThe wheel extender can secure either the front or rear wheel while the Mini secures your frameSpend less time wrangling your bike into position for lock-up and more time ridingDimensions: U-Lock - 9.5 cm x 16.5 cm (3.75 in x 6.5 in), Extender - 8.3 cm x 9.5 cm (3.25 in x 3.75 in)Sold Secure Silver