Locking at the push of a button: it can be locked with a light touch, convenient / easy / fast Alarm: adjustable alarm scare the thief Two keys: delivered with two keys, one can be stored at home How to use: The disc brake lock can be used on the disc brake rotor of the bicycle, and the disc brake can be locked on the wheel spokes without the disc brake rotor Color: Yellow Note: Since measurements are taken by hand, the sizes indicated may vary from 1 to 3 cm. Actual color may be slightly different from photo due to different screen settings and lighting effects. Description: Material: steel. Battery: integrated button cell. Dimensions: see photo. Content: 1 padlock. 2 keys.