The American Lock No. A31 Solid Body Padlock features a 1-1/2in (38mm) wide solid aluminum body and a 1-1/2in (38mm) tall, 1/4in (6mm) diameter boron shackle for superior cut resistance. Ideal for corrosive environments, the non-rekeyable 5-pin APTC12 cylinder can be factory keyed to your requirements.