Unbranded Bike Chain Lock, 6mm Thick Security Chain Lock Bike Lock Heavy Duty An

Keyless locking: This is a simple locking mechanism. It is designed to be locked by inserting the locking bolt, which is fast and convenient.
High-quality metal material: Made of high-strength durable metal material, which is strong enough to provide an anti-theft performance.
Thicker chain lock: This 6mm diameter thick chain is treated with multiple heat processes, improving the hardness and density of the lock. The shear resistance, tensile resistance and corrosion resistance of this lock make it more safe.
Double groove lock cylinder: The lock cylinder is made of high quality material, which is durable and wear-resistant. The precise lock cylinder structure makes it difficult for thieves to open with master keys, ensuring the safety of your property.
Polyester protective sleeve: A high-quality polyester protective sleeve is used to make the lock more smooth, durable and wear-resistant. It wont scratch the body, protecting the perfect appearance of your bicycle.
Safe chain lock to protect your bike from theft.
Keyless locking, you just need to insert the locking bolt easily.
The strong and durable manganese steel chain makes this lock with high hardness and powerful anti-theft function.