COSMOS &reg; 360 Degree Rotating Swivel Arm Tripod Mount Adapter Converter for Gopro Hero 4 3 3+ 2 1 Session SJ4000 SJ5000 HD Camera 360 degree rotatable design allows quick adjustment of shooting angles Compatible with GoPro Hero1, Hero2, Hero3, Hero3+ and Hero4 cameras Stable and solid, multi-function, wide application range. Easy for use and installation Made of hard ABS material, light weight and easy to take. Dimension: about 2-5/8 inches from bottom to top