0.75" to 1.4" (1.9cm - 3.5cm) Roll Bar Bike Handlebar Seatpost Pole Mount for GoPro Hero 1, Hero 2, Hero 3, Hero 3+, Hero 3 Plus, Hero 4 Cameras - Black

This GoPro Roll Bar Bike Handlebar Seatpost Pole Mount for GoPro Hero 1 Hero 2 Hero 3 Hero 3+ / Hero 3 Plus Hero 4 Cameras - Black fits 0.75" to 1.4" (1.9cm - 3.5cm) diameter tubes. It is 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 in the size range above.