- 26mm DIAMOND COATED double Layered Steel Shackle - ANGLE GRINDER RESISTANT - 5 years FREE ATPO - 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 - Includes FLEXFRAME-U BRACKET providing convenient multi-location u-lock transport - Key Safe Program - Protective vinyl coating Product dimensions: 10.6" x 6.8" (27.1cm x 17.3cm) Product weight: 5.07 lbs (2.3 kgs)"