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 brass 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) 7, 2 x 4, 5 x 2, 2 cm; shackle (H x W x D) 2, 2 x 2 x 0, 8 cm; 2 keyed alike brass finish padlock; 4 keys Limited lifetime guarantee