Bike/Large Tube Mount for VIRB Mount VIRB to your bike or other large tube to capture your entire adventure. Use the thick or thin insert so the mount fits perfectly, and your camera is locked firmly in place. Accommodating tube diameters from 0.75 to 1.5, the mount can be used on additional objects, including handlebars, seat posts, roll bars, shotgun barrels and more. The mount features interlocking joints that grip in place instead of relying solely on tension. This provides a more rugged and durable, anti-vibration locking performance.