Features: The base is equipped with adhesive tape for holding, installing, and fixing, from installing phone stands or fixing devices to equipment maintenance, fixing tools, and organizing items The 17mm ball socket can be used for sports cameras, LED work and signal lighting, mobile phone tablet holders, equipment, control panel, and installation fixtures The 17mm ball socket is used to link various phone stands and supports 360 degree rotation, making it convenient to use Strong adhesive that can resist detachment even during sudden braking or bumps. Suitable for most smartphone stands, including phone stands, sports cameras, tablet clip, magnetic phone stands, suitable for various devices Specifications: Material: Plastic Base diameter: 7.8cm/3.07'' Height: 65mm /2.56'' It is suitable for various 17mm ball head mobile phone holders and mobile phone tablet holders Package Includes: 1Set Adhesive Ball Mount note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.