【Excellent Anti-Theft Performance】Segotendy robust bike lock is made of high-strength manganese steel and high-density zinc alloy lock core. Compared with other 6mm chain lock, our upgraded 8mm heavy duty bike lock can better resist to cutting and violent damage, providing higher safety protection for your bike. 【Advanced Lock Cylinder】Our bike locks high security uses a C-class anti-theft lock cylinder and double-sided snake-pattern key that is extremely difficult to be stolen. The key is very convenient to use that you don't need to distinguish front and back side to unlock. This bike chain lock comes with two keys, you can save another key at home for spare use. 【High Quality Protective Cloth Sleeve】The most cloth sleeve of bike lock in the market are made of powder printing, which is easy to fall off powder and torn. Segotendy bicycle lock designs unique knitted craft for these problems. Our cycle lock can effectively prevent your bike from scratch and wear, keeping your bike lock in tidy and good appearance. 【360° Convenience】The locking part can be rotated 360 degree for easy locking and unlocking. The lock cylinder has a waterproof and dust-proof cover to avoid rust and jam. Besides, you can wrap the chain lock around bike frame when riding. Segotendy bicycle lock can give you all-round convenience! 【Widely Application】This bike lock with key can be used for bikes, MTB, motorcycles, gates, fences, grills, lawnmowers, sport equipment, ladders etc. Each security chain lock has gone through rigorous quality check process. Please rest assured to buy Segotendy cycling chain lock. If you have any questions, please feel free to contact us., Weight: 2.2487150724 pounds, Manufacturer: Segotendy