Solid body locks provide maximum protection. Fully comply with U.S. Government standards AA59486 and AA59487. Bumpstop Advanced Cylinder Technology resists tampering from lock-bumping attacks. Five-pin cylinder for pick resistance. Re-keyable cylinder provides tens of thousands of key changes. Solid steel case, SPEC CID AA-59486-2AS1LE2S, set size 1, keyed differently, chain, shackle height 3".