About this item Compact, Sturdy and SturdyThe folded size of the chain lock is 4.72 x 2.36 x 1.77 inches, a very small size but the weight with bracket is 735 g. PA6 plastic + high-strength steel alloy lock body (0.39 x 0.59 inch) and zinc alloy + copper alloy lock cylinder with ABS cover make the bike lock cut, saw and shatterproof. Passed 3.5M drop test and 5000N pull test. Foldable bike lock make your bike more secure Four-digit passwordThe 4-digit bike lock combination password protects your bike to be more secure, and you can set your own password conveniently. The code wheel can be turned smoothly, with each turn a click can be heard. Resetting the number bike lock code takes a little effort to press the black button to the required depth. You never have to worry about accidentally setting a password and dont know a new password Sophisticated design1. Bracket tightens the bike lock on the, would never tremble, no voice, even on the bumpy road; 2. PA6 plastic cover, protect your bike from being scratched by the folding bike lock, also protect the lock body, prevent rust and corrosion; 3. After you input the correct code, you press the gray button to unlock your bike lock, so that it is more difficult for someone to open your bike lock without a password Reflector on the bracketNight was the Much easier to spot drivers with the car coming from behind. The mount of folding bike combination lock ensures the safety of the rider. Not only protects your bike, but also helps you for your safety when riding at night