Aluminum 360-degree swivel rotating tripod mount adapter arm connector, with ball joint extension adapter, compatible with helmet/head strap ball joint connector action camera for GoPro Hero13 12 11 10 9 8 7 Max Osmo Action Session (bracket) Key Features: All-metal material, CNC precision machining, surface anode oxidation treatment. Compatible with GoPro Hero 4/5/6/7/8/9. It gives you the freedom and flexibility to capture various angles. Widely used GoPro adapter that can be combined with various accessories such as roll bar mounts, handlebar seat mounts, helmets, and head straps; it rotates 360 degrees and is curved for your camera. Weighing only 60g, it is lightweight and convenient to carry. Product dimensions: approx. 80*50*16mm Color: Black Material: Aluminum alloy