Kryptonite Messenger Mini & U-Lock ExtenderSmall in size, but big on safety, the Messenger Mini & U-Lock extender comes fully equipped to make sure no one is getting away with your bike easily. More lightweight than its range-mates - the Messenger Evolution 5, 7 and 9 - the Mini provides the same security thanks to its 11mm hardened max-performance steel shackle as well as the attached wheel extender, making it a two-part system protecting both your bike and front or rear wheel.Easy To Use, Difficult To BreakTo decrease the likelihood of theft, the Messenger Mini packs a reinforced cuff over the high security disc-style crossbar and cylinder, as well as further protection against leverage attacks, thanks to its centre keyway. With increased shackle dimensions it is more versatile when being clicked in to place due to its Bent Foot Shackle design, making it a high-performing and highly secure option for the safety conscious cyclist. Features:    Security Rating:  Kryptonite Security Scale 7/10, Sold Secure Bicycle Silver Certified    Material:  Lock:  Hardened Kryptonium Steel; Keys:  Stainless Steel    Dimensions:  Lock - 9.5cm x 16.5cm, Wheel Extender - 8.3cm x 9.5cm    Weight:  1.18 kgBuy Kryptonite Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.