Bicycle/Bike Handlebar Bar Seatpost Pole Mount with 3-way Pivot Arm Assembly for Gopro Hero 1/2/3 Camera This mount is for fixing camera on a bicycle Fits 0.75" to 1.4" (1.9cm - 3.5cm) diameter tubes A good choice for shooting photograph in outdoor sports Even the bumpy road will not affect the stability of the fixed camera Compatible with all Gopro Hero3, Hero2, Hero1 and HD Hero original cameras