The Master Lock No. 7 Laminated Steel Padlock features a 1-1/8in (29mm) wide reinforced laminated steel lock body providing extra strength and a 9/16in (14mm) 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.