This bike chain lock is made of high quality stainless steel, which is durable for long term use. Also strongly anti-theft. Strong bearing capacity, this chain lock is not easy to cut, better for protecting bicycles. Strong joint locking mechanism prevents padlock picking, keeping your bike safe. This anti-theft chain is a perfect solution to protect your bike, motorcycle, gates, fences, grills, lawn mowers, generators or other valuables from theft. Our high security chain padlock has a moderate size, very easy to carry. Also note that the English letter on the padlock is random.