Versatile small chain for bikes and more - The small bike chain can be used not only for bicycles but also for motorcycles, scooters, balance bikes and strollers, doors, fences, grills, lawn mowers, sports equipment, outdoor equipment, tool boxes and ladders. Includes 3 keys - Comes with 3 keys. You can keep one for daily use and store the others at home as spare in case you lose one. Protective sleeve - The chain is enclosed in a protective cloth sleeve that helps prevent rust and scratches. Durable and secure - High-strength metal head; durable, strong, and designed for anti-theft use while offering corrosion and rust resistance. Practical use scenarios - Secure a bicycle, motorcycle or scooter in a garage or while traveling. - Lock doors, fences, grills, ladders, or tool boxes to deter tampering. - Secure outdoor equipment such as lawn mowers, sports gear, or strollers when parked or stored.