UNIVERSAL APPLICATION:The accelerator is specially designed for electric scooters, suitable for most scooter models.The thumb press is designed with raised stripe for easy acceleration and very easy to use EASY TO CONTROL:Widened and thick thumbstick, more durable, safer to use, non slip and waterproof design, easy to control. WATERPROOF DESIGN: With waterproof connector, compact and lightweight design, easy to install and use. Can be used on rainy days. UNIVERSAL: compatible with most electric bikes, electric bikes, mountain bikes, folding bike scooter. Scooter Parts Easy To Install And Remove: Electric Scooter Throttle Aclerator Is Easy To Install And Remove, Practical And Easy To Operate. Color: black + red Material: plastic Package Contents: 2 x Finger brake(black + red) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.