18mm hardened Max-Performance steel shackle Patent-pending Hardened deadbolt design gives additional protection against twist and cut attacks Patented steel sleeve over cross bar for double security Highest security disc-style cylinder is pick and drill resistant Sliding dust cover to protect mechanism from dust and debris 3 stainless steel keys - including new design and one LED replaceable key fob 18mm 3.25x6`/8.25x15.24cm Mini Blk/Yel 10 of 10UPC/EAN/GTIN: 720018002178