With the addition of the Kuryakyn 6314 ISO Throttle Boss grip accessory, it can make the difference between a quick trip and a cross-country adventure. The small, adjustable paddle positioned under the palm of the throttle hand allows user to slightly relax grip on gas while maintaining a constant speed. Provides a larger surface area and pad for even more comfort than the original design; Eases hand and forearm fatigue. Simple to install and easily adjustable to suit your needs. Includes (1) contoured gloss black ISO Throttle Boss and (4) 4-40 x 9/16" (SHCS) socket head cap screws; suggested tools for installation (not included): 3/32" allen wrench. The Kuryakyn 6314 ISO Throttle Boss grip accessory is left side compatible with Kuryakyn ISO grips and heated grips on Honda Gold Wing models: GL1800.