Multiple padlock applications: for indoor and outdoor use; stainless steel discus padlock is best used for Self storage units, sheds, trailers, moving trucks, vans and more. Durable design: padlock has a stainless steel body construction and covered keyway for maximum weather resistance, and a reinforced body bumper for scratch resistance. High security lock: lock has a 4-pin cylinder for increased pick resistance and key retaining feature ensures padlock is not left unlocked. High security shackle: tough-cut octagonal boron-carbide shackle that is 50% harder than hardened steel and fully shrouded design minimizes shackle exposure and protects Against bolt cutter attacks. Specifications: padlock dimensions (W x H x D) 8 x 9 x 3 cm; shackle (a x B x C) 1 x 1.6 x 2.1 cm; 1 padlock; 4 keys, Weight: 0.79 Pounds, Manufacturer: Master Lock