Coleman MadDog GearATV Thumb Assist Control - 2000007488 No more tired or sore thumbs on long rides More leverage to throttle with your palm Comfortable shape for several thumb positions Easy-to-install mounting system Fits most ATVs (does not fit oversized throttle levers) Durable construction, stainless steel hardware and nylon attachment 3.3 x 3 x 0.6 in. 1-year limited warranty Made in U.S.A.