Goliton? Roll Bar Mount for GoPro HERO4/3+ /3/2/1 Suitable for shooting in various angles and in varied situations, such as bicycle, motorsports, windsurfing, and boat. The Roll Bar Mount for Action Cam is a mount for the Action Cam that allows the camera to be attached to roll bars, handlebars, and other tubes of various sizes. The mount incorporates an adjustable 3-axis head allowing the Action Cam to capture shots from just about any angle. Mount your Action Cam securely to the bars on your vehicles for smooth shooting. A roll bar mount also allows you to take shots of yourself and people behind you . Supported bar diameter range :20mm - 65mm.