The Master Lock No. 5KA A383 (24-Pack) Laminated Steel Padlocks, Keyed Alike - multiple locks open with the same key - feature a 2" (51mm) reinforced laminated steel lock body providing extra strength and a 1" (25mm) tall, 3/8" (10mm) diameter hardened steel shackle for excellent cut resistance. Dual locking levers provide extra pry resistance making it ideal for industrial applications and the non-rekeyable, 4-pin W1 cylinder helps prevent picking. Keyed alike padlocks available to order to match other locks with the W1 cylinder.