Hardened-steel square-chain bicycle lock with 5-digit resettable combination and protective nylon cover Key benefits Strong theft protection: Robust square chain made of hardened steel offers high resistance to cutting and sawing, helping protect your bike where you leave it unattended. Keyless convenience: 5-digit resettable combination lock lets you set and change your own code — no keys to lose and easy to share with trusted riders. Scratch protection: Durable nylon cover shields your bike’s paint and components from direct metal contact while keeping the chain tangle-free. Practical and versatile: Flexible chain design allows secure locking of the frame and wheels to fixed objects such as racks, poles, and fences. Product features Material: Hardened steel square chain for elevated cut and saw resistance. Lock type: 5-resettable combination mechanism for keyless operation and simple code changes. Cover: Nylon sleeve provides surface protection and reduces noise and abrasion. Function: Designed to secure bicycles by wrapping the chain around frame and fixed objects; easy to adjust and reset. Typical uses Commuting: Secure your bike at transit hubs or workplace racks during daily travel without carrying keys. Quick stops: Lock at a café or shop while you run errands; set and share a temporary code if needed. Shared or indoor storage: Keep bikes protected in shared storage rooms, garages, or communal bike areas where a keyless option simplifies access. Why this lock This chain lock combines hardened-steel construction for resistance against cutting and sawing, a 5-digit resettable combination for reliable keyless access, and a nylon cover to protect your bike’s finish. It’s designed for straightforward use and broad practical application whenever you need to secure a bicycle.