Zinc Alloy Bike Password Lock Anti-theft Folding Code Lock with Mount Bracket for Mountain Bikes This folding bike lock features a one-button lock design for easy use - no key required, simply press the lock cylinder. Perfect for daily commutes or long rides, this anti-theft bike lock delivers excellent performance. Features: This anti-theft bicycle lock features a 4-digit combination, eliminating the worry of lost or forgotten keys. Enjoy your ride with peace of mind. Small size, can easily fit into pockets, car bags, etc., saving space.  Suitable for bicycles/motorcycles/electric cars/doors.  Equipped with two keys in case you forget. If you forget the password, you can use the key to retrieve it.  Comes with a water bottle holder style storage lock holder, convenient for storage and access.  The lock piece has been quenched and heat-treated to increase its hardness and strength, effectively resisting external force damage.  Specifications: Material: Zinc alloy, Cr steel, stainless steel, PP Color: Blue/ Black and Orange (optional) Size: 6.3*6.3*9.1cm/ 2.5*2.5*3.6 in Weight: 748g/ 26.4oz Package list: 1 * bike lock