GOPRO Boom & Bar Mount . Mount your GoPro to windsurfing masts, kit bars, handlebars, seat posts, ski poles and more. The hinged design easily clamps to different mounting locations. The mounting base rotates 360° to give you different camera angles at the push of a button and lets you move between mounts quickly. Fits 0.35 to 1.4in (9 to 35mm) diameter tubes.Available from H20 Sports with Free Next day shipping.