New hardened deadbolt anti-rotation design 12mm hardened steel shackle resists hand tools Includes 2 stainless steel keys with ergonomic design to reduce the amount of torque and keep them from bending or breaking Includes side mount snap-in bracket Disc style cylinder with center keyway 12mm 4x8`/10.7x20.32cm Std Blk 5 of 10 Included 4196UPC/EAN/GTIN: 720018004196