With an elegant design and revolutionary heating core, the quick heating function of the Koso heater grips warm your hands quickly and effectively. Suitable for motorcycles, Scooters, Quads and ATVs with 22 mm handlebars and thumb throttle. A 5-stage controller allows you to adjust the temperature. The special rubber coating ensures durability and longer service life of the heated grips. Suitable for motorcycles, Scooters, Quads and ATVs with 22 mm handlebars and thumb throttle. Left Inside diameter: 7/8 inch (for 22mm handlebar) internal diameter, right: 7/8 inch (for 22mm handlebar) handle rubber length: 130mm