The Go Pro Roll Bar Mount is a roll bar tube clamp for mounting your quick-release Go Pro camera on to tubes & frames ranging from 1.4" to 2.5" (3.5cm – 6.35cm) in diameter. Perfect for clamping your camera to the radiator cap (both metal & plastic caps) on karts. You can also clamp to bike frames, bumper bars, ski/surfboard racks, or anything else that is in the size range above. Comes with pivoting orientation arms allowing for 3-way adjustability, ensuring you can get the angle you want. Compatible with all Go Pro quick-release cameras including the Helmet HERO Wide, Motorsports HERO Wide, Motorsports HERO, Surf HERO, & WIDE HERO cameras. Not compatible with the Digital HERO 5 Wrist Camera. What's Included: 1 Roll Bar/ Tube Clamp 1 Three-way Adjustable Pivot Arm (three piece assembly) Warranty: One Year