Monotre Bike Chain Lock, 5-Digit Resettable Combination Heavy Duty Anti-Theft Bike Chain Lock, 3.9ft Long Keyless Security Bike Lock for Bicycles, Scooters, Motorcycles, Doors, Fences

This is a 5-digit resettable bike chain lock that allows you to set up 10,000 number combinations to give a thief only 1 in 10,0000 chances to crack the code. The lock cylinder and adjustment knob of this heavy-duty anti-theft bike chain lock are made of zinc alloy, and the bicycle chain is made of 0.24-inch upgraded alloy steel, which is resistant to drilling and technology unlocking. This combination chain lock has no key, so you don't have to worry about losing or forgetting to carry your keys. The exterior of the chain lock is wrapped in a high-density polypropylene cloth bag, which is scratch-resistant and wear-resistant, which not only protects the chain from rust, but also prevents your beloved bike from being scratched.