RS 4-Digit Combination Padlock. 4-digit combination code, 10,000 sets of combination available Set your own combination freely for personalized convenience and increased security Hardened steel shackle for added protection from cutting and sawing Quality brass lock body with excellent resistance for corrosion. How to set your own combination:. 1. Set the lock to its factory presetting 0-0-0 by lining up all the digits next to the marks in the middle of the dial 2. Turn the shackle a full half-turn (180 ) so that the lock is fully open then press the shackle down into the body of the lock 3. Set your own combination 4. Lift the shackle up out of the body again. Turn the shackle back to the fully-open position