(Make Thieves Fear Anti-theft Alarm Lock) YOHOOLYO Alarm Disc Lock is a practical solution for bikers to protect their beloved motorbikes or bikes while parking outside or at home | (Crash-resistant Disc Lock) This disc brake lock is constructed with forged stainless steel and easy to lock with one-press operation,just push down the button with a“Beep”sound into alarm status | (Waterproof 110 DB Alarm Disc Lock)Up to 110 db alarm will automatically activate upon sensing any vibration or shock. With waterproof function,keep working in rainy days and never get rusty | (Double Assurance Disc Lock for Vehicle) It comes with two keys, it is ideal for motorcycles, bicycles, scooters and any vehicle where there are holes or spokes on a wheel | (Sustainable Two Set Batteries and Portable Lock) 6 internal batteries and 6 back up for longer use. An Allen wrench to disassemble the lock and carry pouch for storage included.2 pcs security keys for every different lock with well-packed box | (Wide Application Range Disc Brake Lock) YOHOOLYO disc brake lock fits for various vehicles with up to 6 mm disc brakes: motorcycles, electromobile, bicycle, motorbike,scooters etc