Specifications16mm hardened max performance steel shacklePatent-pending hardened double deadbolt design gives additional protection against twist and cut attacksHighest security disc-style cylinder is pick and drill resistantSliding dustcover to protect from dirt and debris3 stainless steel keys - including new design and one LED replaceable key FOBIncludes flexframe-U bracket providing convenient multi-location U-lock transportKey Safe ProgramProtective vinyl coatingProduct dimensions: 4” x 8” (10.2cm x 20.3cm)Product weight: 4.45 lbs (2.02 kgs)