BAXIA TECHNOLOGY 12-in-1 Essential Accessory Kit for GoPro HERO 4 Black Silver GoPro HERO 3+ Black Silver GoPro HERO 3 Black Silver GoPro HERO 2 Black Silver Accessories Bundle Kit for GoPro 4 3+ 3 2 1 SJ4000 SJ5000 SJ6000 Head Belt Strap Mount + Long Screw Bolt. Comfortable, fully-adjustable design fits all shapes and sizes. By rotating the Three-way Adjustable Pivot Arm, you can get any angle you want. Chest Belt Strap Mount + Three-way Adjustable Pivot Arm (with Surface Quick Release Buckle/Surface J-Hook Buckle. The length of the Strap can be adjusted to a suitable size for you. 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. It can be quickly and easily install and uninstall.