The Master Lock No. 975 Resettable Combination Padlock features a 2in (51mm) wide brass body for superior strength and weatherability and a 1in (25mm) tall, 5/16in (8mm) diameter hardened steel shackle for excellent cut resistance. Dual deadlocking protects against prying, shimming and rap attacks and a shackle seal protects components for trouble-free operation. The 4-digit dials allow you to set-your-own combination and reset to restrict/change allowed access without a combination reset tool.