MaximalPower 3-Way Bike Mount Handlebars Seatposts Ski Poles Bar Mount Metal Screws 3-Way Adjustable Pivot Arm for All GoPro Cameras Campatible with all GoPro Cameras. 100% Compatible with original manufacturer equipment. 3-Way adjustment to mount your GoPro cameras securely and you can adjust the angle for perfect shot. Fits .768" to 1.4" (19.5mm to 35.56mm) diameter tubes Protective liner prevents marring on mounting surface and enhances stability. Can be clamped to a pipe or pole to create a handheld boom.