The Bike Chain Lock is a heavy-duty anti-theft bicycle lock designed to provide strong security for your bike. With a 5-digit combination lock mechanism, you can easily secure your bike with a unique code. Made of durable alloy steel and zinc materials, this chain lock is 3.2 feet long and 6mm thick, making it resistant to cutting and bending attempts. The sleek black finish and hand control touch features add both style and convenience to this reliable bike accessory.