The Master Lock no. 6121KALJ Pro Series Weather Tough covered laminated padlock, keyed alike – multiple locks open with the same key – features a 2-1/8in (54mm) wide heavy steel body to withstand physical attack and a 2-1/2in (64mm) tall, 5/16in (8mm) diameter hardened boron alloy shackle for superior cut resistance. The exclusive cover protects this padlock from harsh elements and a high security, rekeyable 5-pin cylinder with spool pins is virtually impossible to pick. • Keyed alike - order multiple locks to open with the same key or order to match other locks with the W6000 cylinder • Ideal for harsh outdoor conditions - exclusive Pro Series Weather Tough cover protects lock from water, ice, dirt and grime • Pro Series padlocks are designed for commercial/industrial applications • 2-1/8in (54mm) heavy steel body withstands physical attack • 2-1/2in (64mm) tall, 5/16in (8mm) diameter hardened boron alloy shackle for maximum cut resistance • Dual ball locking mechanism resists pulling and prying • High security, rekeyable 5-pin cylinder with spool pins is virtually impossible to pick UPC: 071649039683 Weight: 0.57 lbs RKU: LOW2412344