Tyoungg 3 Tripod Mount Adapters for Sony Action Cam AS100V AS30V Action Camera Mini - Gopro Mount to 1/4" thread 3 pack of convert 1/4 inch standard screws for Sony action cameras AS100V AS30V etc. all cameras with 1/4 inch thread 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). Size:Approx. 2.2*3cm(D*H) Material: ABS mostly and steel for the bolt 100% Brand new and high quality