Easy locking system: This bicycle lock features a 4-digit code and a convenient push-lock mechanism for effortless opening and secure closing. No key required, with intuitive operation for daily security. Durable performance: Made from high-quality zinc alloy, the lock is weather resistant and housed in a sturdy enclosure that protects the internal mechanism for long-term use. Secure fit and portability: Locks through disc brake holes larger than 7 mm on motorcycles. Lightweight design and mobility optimized for everyday use, with a reliable reminder thread to help prevent accidents. Custom code security: Millions of possible numeric combinations deter unauthorized access, providing long-term theft protection with a configurable number lock system. Use scenarios: - Daily bike commuting: quick, keyless security during errands or short stops, without carrying a key. - City shopping or transit breaks: easy to lock or unlock while you focus on the next activity. - Motorcycle parking: secure through disc brake holes greater than 7 mm when you need portable, lightweight protection. Specifications and attributes: - Function: 4-digit code with push-lock mechanism for easy operation - Compatibility: suitable for securing motorcycles through disc brake holes >7 mm - Size: lightweight and portable for everyday use - Material: zinc alloy construction with a durable housing - Performance: weather-resistant design with a reliable reminder thread for safety awareness - Security: millions of possible code combinations for customizable protection