PADLOCK APPLICATION: For indoor and outdoor use; Padlock is best used for backpacks, briefcases, tackle boxes, lockers and storage locks DURABLE DESIGN: Padlock features a durable solid brass body to resist corrosion and a hardened steel shackle for cut resistance SECURITY: 4-pin cylinder and dual locking lever mechanism provides pick and pry resistance SPECIFICATIONS: 1-9/16 in. wide lock body; 1/4 in. diameter shackle with 2 in. length, 13/16 in.width; extended shackle length for application flexibility INCLUDES: Four padlocks, two keys; same key opens all four locks, Manufacturer: Master Lock