Features1Stable and Responsive: Provides stable and responsive speed control, works well on the left side of the handlebar. 2Durable: The wire and interface are durable and have good contact, ensuring a low failure rate for long term use. 3Applicable: Electric scooter accelerator fits most electric bike or scooter handlebars on the market. 4Linear Way: Red positive, green signal line, black negative, Thumb Accelerator with accessories, easy to install. 5ABS Material: High quality ABS refined, flame retardant, durable, wear resistant and non slip, easy to use.SpecificationItem Type: Thumb AcceleratorMaterial: ABSHandle Diameter: Approx. 22mm/0.9inLinear Definition: Red Positive, Green Signal Line, Black NegativePackage List1 x Thumb Accelerator1 x Accessories