<p>Our 4-Dial Combination Disc Padlock is designed for your storage needs with various useful applications including, but not limited to, our Steel Slat Roll-Up Door. It is made of a shielded and hardened steel shackle that is resistant to rust and attempts to pry and cut. The re-codable lock is perfect for long-term use and multiple customer turnovers. How to set pad lock: Turn dials to opening combination (factory default is 0-0-0-0). Turn the slider lever clockwise to open the lock. On the back of lock, use a screwdriver to turn the change-screw counterclockwise 90 degrees from A to B. The lock is now in reset mode. Turn dials to the desired combination. Turn the change-screw clockwise 90 degrees bank to the original position at A. The lock is set to a new combination at this point. (We recommend to record the new combination in a safe place for future use, if required.)</p>