A lightweight integrated chain in the keeper line of kryptonite security productsthe keeper integrated chain is a hardened triple heat treated boron manganese steel chain made with 7 mm four sided linksthe keeper integrated chain secures with a new integrated lock headchain links are enclosed in a nylon webbing sleeve to protect paint from scratchesend pin link design secures the chain with the hardened deadboltoffers great holding power against attackshigh security disc style cylinder is pick a