Description:Scope of Application: With 1/4 inch screw adapter allows attachment of all action cameras on handlebars of bicycle, motorcycle, mountain biking, motocross, ski poles, seat tubes, water sports and other action. Adjustable Angle: Built-in 360 degree rotation part allows capture from perfect angle and allows quick change of perspective for dynamic shots. Stable: The robust construction prevents slipping and breaking and minimises vibrations and wobbling of the camera. Material: Made of engineering plastic and aluminum alloy, durable to use. Multiple Types: Total 3 types for you to choose. Specification:Material: engineering plastic + aluminum alloyColor: blackType: A, B, CAdapter sphere diameter(approx): 25mm/0. 98inchLink rod size(approx): 65*3mm/2. 56*0. 12inch(L*W)Fixing bracket size(approx): A: 50*27mm/1. 97*1. 06inch(L*W), sphere diameter: 25mm/0. 98inch B: Maximum fixed diameter: 35mm/1. 38inch, sphere diameter: 25mm/0. 98inch C: 45*22mm/1. 77*0. 87inch(L*W), sphere diameter: 25mm/0. 98inchInstallation position: A: mostly used for motorcycle rearview mirror tubes; B: mostly used for bicycle handlebars; C: mostly used for motorcycle rearview mirrorsPackage: 1 pc * Adapter1 pc * Link rod1 pc * Fixed bracket