The Kuryakyn 6218 Premier cruise assist allows you to 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. The Kuryakyn 6218 Premier cruise assist is 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.