The Master Lock® number 1KA laminated steel padlocks, keyed alike multiple locks open with the same key, feature a 1-3/4 in reinforced laminated steel lock body providing extra strength and a 15/16 in tall, 5/16 in Dia hardened steel shackle for excellent cut resistance. Dual ball bearings locking for maximum pry resistance making it ideal for industrial applications. Keyed alike padlocks match other locks with the W1 cylinder. Keyed Alike – order multiple locks to open with the same key or order to match other locks with the W1 cylinder. Commercial-grade padlock features superior protection from drilling and prying. Non-rekeyable, 4-pin W1 cylinder helps prevent picking.