The Master Lock No. 175LH Resettable Combination Padlock features a 2in (51mm) wide solid brass case for strength and weatherability and a 2-1/4in (57mm) tall, 5/16in (8mm) diameter hardened steel shackle for excellent cut resistance. The 4-digit dials allow you to set-your-own combination and reset to restrict/change allowed access – 10,000 combinations available.