Service: Your satisfaction is our priority. If you are not satisfied with our product or have questions, please contact us. Easy to use: This 5-digit combination lock can be set easily. The factory default is 00000. Follow the instructions to change to your desired combination. Bike lock with code: 5-digit combination lock, easy to set and reset to your own code. 100000 possible combinations, so a thief could guess your number. High security bike lock: The lock uses an 11 mm twist cable with thick zinc alloy construction. The cable is protected by a PVC cover. The security cylinder is made from strong zinc alloy. Use scenarios: - Secure your bicycle at university campus racks, city bike stands, or garage entries. - Daily commuting or shopping trips in urban areas where you need quick, reliable locking. - Travel or hotel parking scenarios where you want portable, compact protection for your bike.