The Master Lock #5KA laminated steel padlocks, keyed alike, multiple locks open with the same key, feature a 2 in reinforced laminated steel lock body providing extra strength and a 1 in tall, 3/8 in Dia hardened steel shackle for excellent cut resistance. Dual ball bearings locking for maximum pry resistance making it ideal for industrial applications and the non-rekeyable, four-pin W1 cylinder helps prevent picking.