Description: Suitable for disc brake of motorcycle、 bicycle and electric car scooter use.To help keep your motorcycle from getting stolen.Open the lock with a key to stop the alarm.Press the lock cylinder that is locked and you can hear a beep voice、 the lock has entered an alarm state.Designed with a reliable drill-protected locking mechanism、 easy to open by the original key. Specification: Material: SteelColor:SilverHeight:4.1cm Width: 3cmLock Cylinder:0.5cmEat dish depth:0.65cmNet weight:0.21KGNote:1. Please check your brake disc lock depth before you purchase.2.Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Package included: 1 x Motorcycle Disc Brake Lock