The Master Lock® No. 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 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. Keyed alike padlocks available to order to match other locks with the W1 cylinder.