Feature:1.Made of quality aluminium alloy material, anti-deformation, anti-rust, sturdy.2.Can be installed on the helmet for skydiving or outdoor cycling usage.3.Lightweight, easy to install and use. Fixed by screws, more firm.4.Fine workmanship, smooth surface, will not scratch your camera.5.Suitable for Gopro 7, 6, 5, 4, for SJCAM, for XiaoYi, for DJI OSMO action cameras.Spezifikations:Material: aluminium alloyOptional Color: black, red, blueFixed mount holder size(length*width): Approx. 39*20mm/1.5*0.8inTwo screws distance: Approx. 25mm/1inScrew length: Approx. 18mm/0.7inPacking List:1*Helmet Fixed Mount Holder2*Screw