Neomark for Sony Action Cam Elastic Head Band Strap Mount Belt With Adapter HDR-AS100v AS30V AEE AS15 AS30 SJ1000 Sports Action Cam Neomark elastic head band for Sony action cameras or other cameras with 1/4 inch screw thread. One Size Fits All adjustable head strap mount with adjustable buckles allows for use on head and helmets Made of Nylon Straps and Polycarbonate buckles NOT RECOMMENDED for high-impact sports. Only recommended for non-impact activities Package includes: one elastic head strap + one screw + one adapter