The Master Lock No. 101KA Laminated Steel Padlock, Keyed Alike – multiple locks open with the same key – features a 3-1/4in (83mm) wide laminated steel lock body providing extra strength and a 3in (76mm) tall, 5/16in (8mm) diameter hardened boron alloy shackle for superior cut resistance. Ideal for commercial refrigerators and other wide-span applications, a dual locking mechanism provides extra pry resistance and the rekeyable, 5-pin W27 cylinder helps prevent picking.