Bar Fly 4 Prime 7075 Aluminum Mount 35.0 and 31.8mmCNC machined from 7050 aluminum Dual mounting positions to accommodate both small and large computers. Engineered aluminum construction provides the ultimate front camera mount. Di2 EPS mount cleans up the cockpit Computer can be used simultaneously with either a Di2 EPS mount, GoPro, or light (only 1 accessory can mount on bottom) Includes mounts for all these items: Garmin, Polar, Wahoo, Mio, Joule, Cateye, Bryton, GoPro Finned mount, light mount,