Gain innovative throttle assist at an affordable price Relax your grip on the throttle, making pins and needles and fatigue a distant memory Simple design emphasizes reliable function over flashy styling; interchangeable rubber inserts allow use with most grip configurations Includes (1) black Premier cruise assist assembly; Suggested for installation (not included): set of hex and combination wrenches Universal fit for 7/8" and 1" handlebars for OEM (original equipment manufacturer) grips; Aftermarket grips with minimum 1 1/8" to maximum 1 3/4" outside grip diameter