The Master Lock No. 176 Combination Padlock is designed for strength and durability with its solid brass case and hardened steel shackle, providing excellent cut resistance. Its 4-digit dials offer 10,000 possible combinations and tailor access control, while the key override feature ensures supervisory access anytime (control key sold separately). Please note: this model can only be keyed alike to key codes that begin with "P". All other key codes are invalid. Master Lock 176 Combination Padlock Features: 2" wide brass combination lock 1" vertical and horizontal shackle clearance double locking hardened steel shackle 4 dials on the bottom resettable combination 10,000 possible combinations includes keyway on the side for key access The combination must be known in order to reset to a new combination the control key is sold separately