The Master Lock No. 5KA Laminated Steel Padlocks, Keyed Alike - multiple locks open with the same key - feature a 2” reinforced laminated steel lock body providing extra strength and a 1” tall, 3/8” diameter 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, 4-pin W1 cylinder helps prevent picking. A150 Keyed alike.