Features1Manufacturing Material: Made of high quality ABS material, it is strong, durable, waterproof, and practical, which will undoubtedly prolong its service life. 2Universal Mounting Position: Left and right universal mounting position, suitable for electric bicycle, simple and easy to install. 3Easy to Install: Quick installation, can be installed without disassembling the handle, and can be adjusted and installed freely according to the diameter of the handlebar handle. You can install this thumb throttle on the left handle or the right handle according to your usage habits. 4Anti Impact and Comfortable Shape: Anti impact, comfortable shape for several thumb positions, it can be installed without removing the grip, and it can be installed quickly. 5Easy to Use: 300X thumb throttle, suitable for electric bicycles with a handle diameter of 22.5mm, easy to use and fine workmanship. Without any difficult requirements even though you use it for the first time.SpecificationItem Type:300XThumbThrottleWeight: Approx.73g / 2.6ozMaterial: ABSApplicable Handle Diameter: Approx.22.5mm / 8.9inPackage List1 x Thumb Throttle