Outdoor Lock; Heavy duty padlock with key is best for storage and fencing, self storage units and lockers, tools, work boxes and more KEY LOCK WITH DUAL ARMOR CONSTRUCTION Laminated steel lock body surrounded by stainless steel and zinc exterior components and the heavy-duty octagonal boron carbide shackle is 50% harder than hardened steel 4-pole cylinder and dual ball bearing lock for increased pick and break resistance; covered keyway and shackle for added weather protection 2 in. (51mm) wide lock body; 3/8" (10mm) diameter shackle with 1" (25mm) length, 15/16" 24mm width Includes a padlock with two keys, Weight: 1.0 pounds, Manufacturer: Master Lock