Attach your gopro to roll bars railings or any tubes from 14 to 25in 35 to 635cm in diameter the hinged non slip design is perfect for mounting to roof racks and more the integrated base rotates 360 to let you capture shots from any angle at the push of a button move your camera between mounts on the fly with the included vertical mounting buckle to enable multiple povs for more dynamic footage the hinged non slip design connects quickly to any 14 to 25in 35 to 635cm diameter