Zinc alloy bike lock with wear-resistant and durable construction provides reliable protection for your ride. - Road bike lock: built for durability and stable security, designed to withstand regular use on road bikes. - Bicycle code lock: uses sturdy materials for long-term reliability; a padlock-style design that is easy to operate. - 4-digit combination lock: set your own code for theft deterrence; no keys to carry or misplace; robust protection for your bike. Key benefits - Easy, key-free security with a custom 4-digit code - Durable zinc alloy body resists wear and long-term use - Stable performance for everyday cycling, commuting, and errands - Simple to use and maintain with low maintenance requirements 2-3 practical use scenarios - City commute: lock your bike at a transit station or curbside rack while you run a quick errand. - Campus or shopping trip: secure your bike during classes or shopping, giving you peace of mind for longer stops. - Road trips or rest stops: place the lock on bikes at cafe breaks or scenic overlooks, knowing your bike is protected. This description preserves the original product functions and materials while presenting clear, customer-friendly benefits and practical use cases.