ITEM NAME:Wing Mirror Adapter RH 8mm - RH10mm Bolt Rear View for Suzuki Motorcycle Description: - High quality 100% Brand New - Easy to install and useful adapter - These adapters will screw into your 8mm clockwise threaded mirror mounting point and then you will be able to mount the 10mm mirrors. - Thread Diameter: 8mm/10mm - Screw thread: Right-handed (LH) thread / Right-handed (RH) thread Specification: - Color: Black - Size(L x W): 26 x 15.5 mm/1.02 x 0.61 inch - Material: Steel Metal What is RH and LH screw thread and how do I know which one should I purchase? - 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. - Threads oriented in the opposite direction are known as left-handed (LH). In brief : - Right-handed (RH) thread: Tighten the screws in a clockwise direction. - Left-handed (LH) thread: Tighten the screws in a counterclockwise direction. Fitment: - Fits Most Motorcycle, Street Bike, Cruiser & Chopper Models. Package Included: 2 Pieces Motorcycle Rearview Mirror Adapter Bolts Note: 1.Please allow 0.1-0.3cm differences due to manual measurement, thanks. 2.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% the same..Screw thread: Right-handed (LH) thread / Right-handed (RH) thread. - 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.