The Master Lock No. 7KA Laminated Steel Padlock, Keyed Alike multiple locks open with the same key features a 1-1/8 inch (29 mm) wide reinforced laminated steel lock body providing extra strength and a 9/16 inch (14 mm) tall, 3/16 inch (5 mm) 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.