CNC-machined, polished and anodized 6061 aluminum Self-lubricating Delrin bushings at each end of tube eliminate aluminum-to-aluminum contact and provide an ultra-smooth feel Installs in minutes Notes Removable end cap eliminates the need to cut the end of the throttle tube when using dirt bike handguards. Fits inside the stock throttle housing to stock cables. Grips sold separately. Color/Finish Red / Anodized Base Color Red Finish Anodized Material Aluminum For Handlebar Diameter 22 mm / 22 mm (7/8") / 7/8"