Owing to the four-digit combination, this lock is highly secure and prevents your bike from being stolen. There is no doubt that this lock is anti-theft to use for protect your bikes from loss or being stolen. And the thicken wires make it be solid and wear-resistant and have high strength, which improves the safety. It is made of good steel wire and ABS material. The length of this product is 60cm. It is suitable for install on bike, bicycle and MTB to anti-theft. Item Name: Bicycle Lock Material: Steel Wire, ABS Lock Mechanism: Combination Lock: 4 Digit Combination Features: Durable, Anti-Theft, Portable Size Details: Length: 60cm/23.62"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bicycle Lock