Fangrui Product Features 1、Made of quality aluminium alloy material, anti-deformation, anti-rust, sturdy. 2、Aluminum alloy ball socket, meet the requirements of highly accurate and durable. Smooth surface, will not scratch your equipment. 3、Lightweight, easy to carry and use. 4、Bottom for 1/4 screw, fit for most of camera equipment. Good accessory for photography enthusiasts. 5、Compatible for DJI OSMO ACTION Gopro all series, for SJCAM, forXiaoYi. Specification Fangrui Product Features: 1.Made of quality aluminium alloy material, anti-deformation, anti-rust, sturdy. 2.Aluminum alloy ball socket, meet the requirements of highly accurate and durable. Smooth surface, will not scratch your equipment. 3.Lightweight, easy to carry and use. 4.Bottom for 1/4 screw, fit for most of camera equipment. Good accessory for photography enthusiasts. 5.Compatible for DJI OSMO ACTION Gopro all series, for SJCAM, forXiaoYi. Specifications: Material: Aluminum Alloy Weight: Approx. 26g Ball head diameter: Approx. 2.5cm/1 inch Bottom 1/4 " screw  Packing List: 1*Ball Bracket Base Mount 2*Rubber Gasket Package List Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin