Suitable for Rearview mirror rod with a diameter of Between Between 10mm and 10.5mm (including 10.5mm) (please measure whether the Rearview mirror rod diameter of your motorcycle is within the range of Between 10mm and 10.5mm (including 10.5mm) before purchasing. If the Rearview mirror rod diameter of your motorcycle is not within the range, please do not Purchase, thank you) NOTE:If the diameter of the screw at the bottom of your motorcycle rearview mirror rod is less than 10.5mm, but the diameter of your motorcycle rearview mirror rod is greater than 10.5mm, then you can also install the product hook on the screw at the bottom of your motorcycle's rearview mirror rod. Suitable models: Universal 10.5mm Mirror rod motorcycle Describe: -Please refer to the size to see if it is suitable. Suitable for you to ride a bicycle. Thank you. -The product can be installed and used without modification, easy to install, and no installation instructions. -Anodized, not easy to fade or corrode. -Stylish design and superb technology are more suitable for your bicycle. Condition:100% brand new Material:CNC Aluminum Alloy Colour:Black Red Gold Titanium Silver Blue Quantity: a hook Function: carry helmet, packages, bags.,etc Easy install, No harm install Notice: -Due to the difference in lighting and display, the color of the product in the picture may be slightly different from the actual product. -Due to manual measurement, there may be subtle errors in product dimensions. -If you have any questions, please contact me, thank you