Key Features:13mm hardened MAX-Performance steel shackle resists bolt cutters and leverage attacks,New patent pending hardened double deadbolt design gives additional protection against twist attacks,High security disc-style cylinder is pick and drill resistant,Anti-rattle bumpers reduce noise during transport,New dust cover,Includes Transit FlexFrame-U transportation system which allows for versatile carrying,Protective vinyl coating,3 stainless steel keys – one lighted with high intensity LED bulb & replaceable battery,Key Safe Program,Rated 7/10 on Kryptonite\'s security scale,Optional ATPO - £ 1,500,Product dimensions: 3.25” x 5.5\" (8.3cm x 14cm),Product weight: 2.65 lbs (1.20 kgs),Sold Secure Bicycle Silver certified.