Adapter - Mirror - Stealth - Reverse Thread - Left - Black Mounts on a wide variety of import cruiser-style motorcycles or any other motorcycle with 10 mm mirror mounts, When installing Whisker lights, adapters have to be drilled through the center with a 1/8" bit to allow electrical wires to exit mirrors. Bottom of hole in hand controls may have to be drilled as well. Chamfer edges of holes to prevent insulation chafing.