The Master Lock No. 175 Resettable Combination Padlock features a 52mm wide solid zinc case with brass finish for strength and weatherability and a 26mm tall, 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. The Limited Lifetime Warranty provides peace of mind from a brand you can trust. Combination change key included.