Master Lock Padlock, Covered Aluminum Lock, 1-3/16 in. Wide, Black, 131Q (Pack of 4-Keyed Alike) 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 black vinyl-covered aluminum body that is scratch and corrosion resistant and a hardened steel shackle for cut resistance SECURITY: 4-pin cylinder and dual locking lever mechanism provides pick and pry resistance SPECIFICATIONS: 1-3/16 in. wide lock body; 3/16 in. diameter shackle with 5/8 in. length, 9/16 in. width INCLUDES: Four padlocks, two keys; both keys open both locks (matching color key head for added convenience) 1-3/16in (30mm) Wide black vinyl covered body for scratch resistance Made of corrosion resistant materials Hardened steel shackle for extra cut resistance 4-pin cylinder for added pick resistance Matching colored key head for added convenience Keyed Alike - same key opens all four locks