12.7mm hardened PERFORMANCE STEEL SHACKLE. New Patent-pending HARDENED DOUBLE DEADBOLT DESIGN gives additional protection against twist attacks. HIGH SECURITY DISC-STYLE CYLINDER is pick and drill resistant. Includes 2 STAINLESS STEEL KEYS, with ergonomic design to reduce the amount of torque, and keep them from bending or breaking. NEW DUST COVER. Includes FLEXFRAME-U BRACKET providing convenient multi-location u-lock transport. Protective vinyl coating. 2 stainless steel keys. Key Safe Program