The Master Lock No. 5KALF Laminated Steel Padlocks, Keyed Alike - multiple locks open with the same key - feature a 2in (51mm) reinforced laminated steel lock body providing extra strength and a 1-1/2in (38mm) tall, 3/8in (10mm) 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.. See full description for further details