Kuryakyn Wedge In Trident Handlebar End Mirror Universal 6370 Kuryakyn part # 6370 Sold Each Proper installation may require cutting or drilling a 5/8 hole in the end of the OEM grips. Proper installation requires 7/8 or 1 handlebars that have open ends. Not compatible with Kryakyn Chrome style throttle bosses that screw to the end of Kryakyn Grips or other grip end accessories/weights. Not suggested for Buckhorn style handlebars. Bar weight required to be removed on some late Shadow 750 Models & VT1300 Custom Line. Tech Tips: Does Not fit throttle side 08-12 Touring Models, Trikes or 11-'12 FLSTSE with electronic Throttle Controls. Suggested Installation for Left Grip Clutch Side Only.