Padlock application: for indoor and outdoor use; laminated steel padlock is best used for storage units, sheds, Garages, fences and more. Dual-armor protection: small padlock has a laminated steel core for strength surrounded by stainless steel and zinc outer components for weather resistance. High security application: lock has a 4-pin cylinder for increased pick resistance and a tough-cut octagonal boron-carbide shackle that is 50 percent harder than hardened steel. Durable design: laminated steel lock has dual ball bearing locking for maximum Pry resistance and a reinforced body bumper for scratch resistance. Specifications: (H x W x D) 9.9 x 4.5 x 2.7 cm; shackle (H x W x D) 5.1 x 2 x 0, 8 cm; 1 padlock; 4 keys., Weight: 0.5535586936558 pounds, Manufacturer: Master Lock