Security bicycle lock with a combination function eliminates the need to carry or lose a key and provides convenient access. Thick alloy chain for enhanced hardness and strength provides reliable protection against cutting or tampering, making it suitable for urban and outdoor environments. Bicycle code lock lets you set and use your own five digit combination, giving you quick, keyless access and control over who can unlock the chain. This lock offers solid protection for your bike and helps deter theft. It is suitable for bicycles and motorcycles, making it a versatile option for various security needs. Key attributes - Type: chain lock with combination code - Material: thick alloy chain for high hardness and strength - Code system: five digit configurable combination - Compatibility: designed for bicycles and motorcycles - Performance: durable, reliable protection in typical theft scenarios Use scenarios - Park your bicycle at a university campus or city bike rack and secure it with your own five digit code. - Secure a motorcycle or scooter in parking lots or garages where security is a concern. - When traveling or staying in dorms or hotels, use the chain lock to protect your bike during temporary stops.