Master Lock Combination Lock, Indoor and Outdoor Padlock, Resettable Combination The Master Lock 175D Set Your Own Combination Padlock features a 2in (51mm) wide solid body for strength and reliability. The 5/16in (8mm) diameter shackle is 1in (25mm) long and made of hardened steel, offering extra resistance to cutting and sawing. The 4-digit dialing allows for thousands of possible numeric combinations. The Limited Lifetime Warranty provides peace of mind from a brand you know and can trust. Features Indoor and outdoor padlock is best used as a school locker lock, gym lock, and gate lock, providing protection and security from theft Set your own four-digit combination lock for easy combination recall; Combination change tool included Combo lock is constructed with a solid body for strength and weatherability, hardened steel shackle for cut resistance 2 inch (51 millimeter) wide lock body; 5 by 16 inch (8 millimeter) diameter shackle with 1 inch (25 millimeter) length, 1 inch (25 millimeter) width Shackle is preset to open on 0-0-0-0; See user manual in technical specifications section of this page for combination reset instructions USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.