17mm 1 Inch Ball Joint Mount Adapter Motorcycle Rearview Mirror Bracket Holder for Accessory Mounts Bullet Points: Fine Workmanship: The aluminum alloy part of the product adopts CNC integrated anodizing process. The ball head is made of premium material. It uses fine workmanship, not easy to slip. Hard and Firm: Comfortable texture and smooth rotation give you the best shooting experience. Very suitable for photography enthusiasts. 360 Degree Rotation: You can cleverly use the button to tilt your head in any direction and rotate 360 degrees for panoramic photography. Easy to set up: the ball joint is 17mm/1 inch, easy to install, stable and not slippery. Suitable for: Suitable for most bicycles, motorcycles, scooters, electric vehicles, and very suitable for recording outdoor cycling sports. Specifications: Material: aluminum alloy and rubber 9-14mm clamp about 25mm; weight approx: 75g Packing List: Bracket*1 or Stand and Accessories (See the detailed specifications of the purchased product) Note: Please accept slight size tolerances due to the manual measurement, and the lighting in photography may cause the color difference from the real thing.