Bicycle security lock with ready-to-use features for effective theft protection - Fine polished lock tongue: the lock tooth is finely finished for easier insertion and removal; it does not jam and cannot be unlocked; includes lock replacement parts for maintenance or replacement as needed. - Theft protection accessory: can be securely mounted on the bike frame to enhance security; designed to work with helmet safety equipment as part of your overall protection setup. - Road bike accessory: the resettable combination lock reduces the likelihood of theft and provides strong bicycle security protection; suitable as part of standard road bike gear. - Versatile bike security lock: helmet lock and number-based lock are useful for outdoor camping and travel, supporting secure transportation and positioning of your bike during trips. Use scenarios - Parking at work or in urban areas: fast, reliable security to deter theft while you run quick errands or attend meetings; frame mounting keeps the lock accessible and ready. - Outdoor camping and travel: secure your bicycle and helmet gear at campsites, hotels, or rest stops during trips; compact and practical for on-the-go security. - Road trips and events: carry as a dependable lock during training rides or cycling events to protect your bike and equipment when brief breaks are needed.