Heavy duty padlock with key is best used for contractors or small businesses; For indoor and outdoor use Padlock with key features laminated steel construction and hardened boron alloy shackle for strength and security, weatherproof body and FlexFit keyway cover add protection against moisture, dirt and grime Heavy duty lock features a 5-pin cylinder and dual ball bearing locking mechanism provides maximum pick and pry resistance; Removable cylinder to rekey your lock if needed 2-1/8 in. wide lock body; 5/16 in. diameter shackle with 1-1/8 in. length, 7/8 in. width One padlock, two keys, Weight: 1.1 pounds, Manufacturer: Master Lock