Description <br> Description: <br> High quality 100% Brand New <br> Easy to install and useful adapter <br> These adapters will screw into your 8mm clockwise threaded mirror mounting point and then you will be able to mount the 10mm mirrors. <br> Thread Diameter: 8mm/10mm <br> Screw thread: Right-handed (RH) thread / Right-handed (RH) thread <br> Specification: <br> Color: Silver <br> <br> Size(L x W): 26 x 15.5 mm/1.02 x 0.61 inch <br> Material: Steel Metal <br> What is RH and LH screw thread and how do I know which one should I purchase <br> When seen from a point of view on the axis through the center of the helix, moves away from the viewer when it is turned in a clockwise direction, and moves towards the viewer when it is turned counterclockwise. This is known as a right-handed (RH) thread, because it follows the right hand grip rule. <br> Threads oriented in the opposite direction are known as left-handed (LH). <br> In brief : <br> Right-handed (RH) thread: Tighten the screws in a clockwise direction. <br> Left-handed (LH) thread: Tighten the screws in a counterclockwise direction. <br> Fitment: <br> Fits Most Motorcycle, Street Bike, Cruiser Chopper Models. <br> Package Includes: <br> 2 Pieces Motorcycle Rearview Mirror Adapter Bolts <br> Note: <br> 1.Please allow 0.1-0.3cm differences due to manual measurement, thanks. <br> 2.Please understand because of the light irradiation or computer display difference, so I cant guarantee photos and real color is 100% the same. <br>