With this 1/4 inch screw you can easily attach your camera to many camera accessories on the market, like bycicle handle bar mount(directly), head strap(directly),chest strap(buckle and J-hook mount needed), some wrist or hand mount straps(directly or buckle needed),car suction cups(directly or buckle needed). KEY FEATURES Universal Conversion Tripod Adapter Camera Mount for GoPro Mounts Size:Approx. 2.2*3cm(D*H) Material: ABS mostly and steel for the bolt