Compatible: The mirror adapter is suitable for most motorcycles and electric vehicles whose mirrors have M10 or M8 mounting openings. Premium Quality: The mirror extender is Constructed of premium aluminum alloy, sturdy, rigid and durable. Function: The rear view mirror extension can effectively prevent cyclists from blocking the view of the rear view mirror, help expand the vision range of motorbike (or electric bike). Be able to lift the mirror 3cm and extend it up to 4cm (the maximum extension distance of two mirrors is 8cm). Usage: If users need to extend wider distance, 10mm and 8mm can be used in combination (rise height 6cm, outward extension distance up to 8cm). Easy to install : The motorcycle mirror adapter has a simple installation process, convenient and convenient to use. Product Description Specification: Condition: brand new Material: Aluminum Alloy Main Color: Black Thread Diameter: 10mm (M10), 8mm (M8) Extended horizontal distance: 4cm Raised vertical distance: 3cm Package weight: about 106g / 3.7oz Package List: 2 x Mirror Adapter + 2 x 10mm Screws + 2 x 10mm Gasket + 2 x 8mm Screws + 2 x 8mm Gasket