ITEM NAME:mirror adapter 10mm (x2) universal Description: 100% Brand New Universal Rearview Mirror Extension Bracket. Made of high quality Aluminum Alloy,durable. Can be installed on 10mm screw holes left and right rearview mirror. for raising & extending mirrors. Easy to install,no installation instruction. Installation: The riser with 10mm thread side is connected to your motorcycle mirror; the M10 bolt is fixed to the motorcycle. Specification: Material: CNC Aluminum Alloy Screw Holes Diameter: 10mm/0.41" & 8mm/0.32" Right Hand Thread. Colorsï ¼Å¡Black Quantity: One Pair Package Includes: 2*Risers 6*Bolts 4 washer(dia:8mm&10mm) Note: Due to light and screen difference, the item's color may be slightly different from the pictures. Please allow 1-5mm deviation due to manual measurement. THANK YOU FOR SHOPPING WITH US! Have a nice dayï ¼ ☠º.Can be installed on 10mm screw holes left and right rearview mirror. Installation: The riser with 10mm thread side is connected to your motorcycle mirror; the M10 bolt is fixed to the motorcycle. 4 washer(dia:8mm&10mm).