Kryptonite Keeper Bike U-Lock, Anti-Theft Security Bicycle U Lock, 12mm Steel Shackle with Mounting Bracket and Keys, High Security Lock for Bicycles .
12mm hardened performance steel shackle.
Hardened Double Deadbolt design with Anti-Rotation to resist against twist attacks.
Includes 2 Stainless Steel Keys with ergonomic design to reduce the amount of torque and keep them from bending or breaking.
Includes Side Mount Snap-in Bracket.
Disc Style Cylinder with center keyway.
Dimensions: 4" x 10" (10.2cm x 25.4cm) - Weight: 2.25 lbs (0.91 kg's)
