Attach your Go Pro camera to roll bars, tubes & more.; Fits 1.4'' to 2.5'' (3.5cm 6.35cm) diameter tubes; You can also clamp to bike frames, bumper bars, ski/surfboard racks, or anything else that is in the size range; Pivoting orientation arms allowing for 3-way adjustability, ensuring you can get the angle you want; :: Unisex > iPod Accessories