Heavy-duty padlock with key for use in outdoor environments such as storage, fences, tools, job boxes, and more. Make sure to measure your door's backset, cross bore, and thickness to ensure the correct fit. The key lock features dual armor construction: laminated steel lock body with a weather-resistant cover and a Tough-Cut octagonal boron-carbide shackle that is 50% harder than hardened steel. It also has a 4-pin cylinder and dual ball bearing locking for increased pick and pry resistance, as well as a covered keyway and shackle for added weather protection. The lock body is 1-7/8 inches (48 mm) wide, and the shackle is 5/16 inch (8 mm) in diameter with a length of 1-1/2 inches (38 mm) and a width of 13/16 inches (21 mm). An extended shackle provides application flexibility. This product includes one padlock with two keys.