Aluminum Alloy Diving Carbon Fiber Double Ball Head Float Buoyancy Arm for Gopro
Product buoyancy: about 39g, 47g, 55g, 63g, 71g, 79g, 87g, 95g. The net buoyancy of the product is about -14g, -8g, -2g, 4g, 10g, 16g, 22g, 28g. BGNing Tripod Adapter Convert Mount to Quick-Release Adapter 1/4 Screw for GoPro.