The Master Lock No. 7KALJ Laminated Steel Padlock, Keyed Alike – multiple locks open with the same key - features a 1-1/8in (29mm) wide reinforced laminated steel lock body providing extra strength and a 2-1/2in (64mm) tall, 3/16in (5mm) diameter steel shackle. Dual locking levers provide extra pry resistance making it ideal for industrial applications and the non-rekeyable, 4-pin W7 cylinder helps prevent picking. Keyed alike padlocks available to order to match other locks with the W7 cylinder.