Attach your GoPro camera to roll bars, tubes and more. Fits 1.4" to 2.5" (3.5 cm - 6.35 cm) diameter tubes. Perfect for clamping your camera to the radiator cap (both metal and plastic caps) on karts. You can also clamp to bike frames, bumper bars, ski / surfboard racks, or anything else that is within the size range. Comes with pivoting orientation arms allowing for 3-way adjustability, ensuring you can get the angle you want.