BAXIA TECHNOLOGY Accessory Kit for GoPro Hero 4 3+ 3 2 1 Black Silver SJ4000 SJ5000 SJ6000 Sports Camera Accessory Kit Accessories Bundle Kit for GoPro 4 3+ 3 2 1 Black Silver Accessory for GoPro Hero 4 3+ 3 2 1 Three-way Adjustable Pivot Arm (Composed by 4 screws and 2 adapters).You can either put them apart, or combining them into a Three-way Adjustable Pivot Arm to use. Surface Quick Release Buckle and Surface J-Hook Buckle. These two buckles can be used on the Chest Belt Strap Mount, which can be quickly and easily install and uninstall. 2 x Flat & 2 x Arc Mounts+10 x 3M adhesive pad (5 for Flat & 5 for Curved Mounts). The viscosity of the adhesive pad is very good. No need to worry about that your camera falls down due to the poor quality. You can use the same accessories on your gopro camera or Sony camera through different adapters.