* 16mm hardened max-performance steel shackle* Patent-pending hardened double deadbolt design gives additional protection against twist and cut attacks* Highest security disc-style cylinder is pick and drill resistant* Sliding dustcover to protect from dirt and debris* 3 stainless steel keys - including new design and one LED replaceable Key FOB* Key Safe Program* Protective vinyl coating* Product dimensions: 4Û x 10.25Û (10.2cm x 26cm)* Product weight: 4.85 lbs (2.20 kgs)