Simple locking system: This bike lock uses a 4-digit code and a practical push-to-lock mechanism for effortless opening and secure closing. No key is required, and the operation is intuitive for everyday security and convenience. Rugged housing: The lock features a durable case made from high-strength zinc alloy. This protective enclosure guards the brake disc lock against environmental exposure and helps ensure long-term security by safeguarding internal components. Versatile compatibility and portability: Fits disc brakes with holes over 7 mm. Lightweight and portable for motorcycles, making it suitable for on-the-go protection during daily rides and occasional travel. Integrated reminder cord: An integrated reminder cord helps prevent forgetfulness and supports easy handling, reducing the chance of leaving the lock in an unlocked state. Innovative security architecture: Engineered with precisely tuned mechanical components that enable smooth braking function while delivering theft prevention through individually programmable code access protection. Use scenarios: - Urban commuting and errands: securely lock your bike while you run into a shop or office, then quickly access the rotor with the 4-digit code. - Short motorcycle stops: portable design allows you to carry the lock and secure the rotor during quick breaks at cafes, gas stations, or parking lots. - Travel and unfamiliar locations: lightweight and compact for easy transport on trips, providing reliable disk-rotor security at hotels, rest areas, or sightseeing stops.