Package dimensions 21 x 11.8 x 5.2 cm; 630 grams Color Red Material Metal, Alloy Steel, Zinc About this item Password Combination 5-Digit SecureIt offers 100,000 password combinations, 10 times harder to crack than a 4-bit password, making it nearly impossible to crack. Save the trouble of carrying the key, just enter the password to unlock, very convenient. High Strength Alloy Steel Chain The inner chain is made of high quality 5.7 alloy steel mm and will not be cut and opened by thieves. Durable and safe to provide cut resistance and a protective cover to prevent scratches. Easy to Set Up Your Combo Default code is 00000.Turn the plastic knob 90 degrees in the clockwise to the designated position, then set a new code (it is recommended to set 00001 first, ensuring that the numbers are aligned with the pointer). Then return the knob to its original position. The new password is set successfully Suitable For Bicycles and Motorcycles With a length of 90cm (35.4 inches), you can lock the wheel to poles, trees, railings and other accessories. It can also be used to lock doors, garden fences, sports equipment, barbecues, ladders, whatever you need to lock. Protective Cloth CoverOne cover special rainproof, dustproof and friction-proof fabric on the outside of the chain, which plays a good role in protecting the chain and making the chain lock more durable. The cover also keeps your hands away from the metal chain, making it more user-friendly.