Outdoor lock; Heavy duty padlock with key is best used for outdoor storage and fences, self-storage units & lockers, tools, job boxes and more Key lock features Dual Armor construction: laminated steel lock body surrounded by stainless steel & zinc outer components and Tough-Cut octagonal boron-carbide shackle is 50% harder than hardened steel 4-Pin cylinder and dual ball bearing locking for increased pick and pry resistance; Covered keyway and shackle for added weather protection 2 in. (51 mm) wide lock body; 3/8 in. (10 mm) diameter shackle with 2 in. (51 mm) length, 15/16 in. (24 mm) width; Extended shackle for application flexibility Includes one padlock with two keys, Weight: 0.5 pounds, Manufacturer: Master Lock