Upgraded and Reinforced Lock Cylinder and Bolt: Our lock cylinder and bolt are made of high-quality alloy steel, making them larger and thicker than ordinary combination bike locks. The bolt is not easy to break or damage, the lock cylinder is not easy to pry open, and it won't cut your fingers during use. Wide Applicability: Easy to carry and can be easily wrapped around your bike. Secure and Convenient Combination: This bike lock uses a 5-digit combination, allowing for up to 100,000 possible combinations, making it virtually impossible to crack. It is more secure than other 4-digit combination bike locks. No key needed; changing the combination is done in just a few simple steps. You'll never have to worry about losing or forgetting your keys and not being able to open your bike door when traveling again. Scratch-Resistant Fabric Cover: The bike lock's fabric cover is made of polyester fiber, which is heat-resistant, corrosion-resistant, and wear-resistant. This lock effectively protects the bike lock, prevents the chain from scratching the frame, and extends its lifespan. Versatile Use: This bike lock is versatile and can be used to lock bicycles to various objects such as logs, fences, and pipe racks. It is also suitable for motorcycles, scooters, strollers, fence ladders, lawnmowers, and toolboxes. Simply attach the bike lock securely to these items for effective anti-theft protection. Quantity and Color: 1 piece. Black. Product Specifications: Material: Alloy steel + polyester fiber. Dimensions: 80*6*6 cm, 100*6*6 cm, 120*6*6 cm. Package Contents: 1 combination lock. Please note: 1. Due to different lighting and screen settings, the product color may differ slightly from the picture. 2. Please allow slight errors in size due to manual measurement. [Friendly Reminder] Returning goods without reason will cause unnecessary waste of resources and effort.