The Kuryakyn 6354 chrome Kinetic Throttle Boss allows the driver to slightly relax their grip and maintain constant speed. Helps driver with hand fatigue on those long rides, this small adjustable paddle is positioned under the palm to the throttle hand. Made of beautiful black aluminum. Includes (1) Chrome Kinetic Throttle Boss, (1) #10 - 24 x 1/2" socket head cap screw; suggested tools for hex wrenches. The Kuryakyn 6354 chrome Kinetic Throttle Boss is multi-fit using: Kuryakyn Kinetic grips on right or left side.