Know that your bike is safe even in the sketchiest of neighborhoods with Kryptonite's NY Fahgettaboudit Mini U-Lock. Kryptonite security level: 10 (High) 18mm hardened Max-Performance steel shackle Patent-pending Hardened deadbolt design gives additional protection against twist and cut attacks Patented steel sleeve over cross bar for double security Hightest security disc-style cylinder is pick and drill resistant Sliding dust cover to protect mechanism from dust and debris 3 stainless steel keys - including new design and one LED replaceable key fob Product dimensions: 3.25” x 6” (8.3cm x 15.3cm) Product weight: 4.55 lbs (2.06 kgs)