GoPro Roll Bar Mount (GoPro Official Mount) Securely attaches camera housing to Roll Bars, ATV's, roll cages, boats, etc. Fits around any bar from 1.4" to 2.5" (3.5cm - 6.35cm) in diameter Captures point-of-view perspective from vehicle Great way to take shots of yourself or of people following you Comes with pivoting arms to allow for 3-way adjustability, allowing you to get the angle you want