Universal Mount replaces Top Cap with a functional GoPro style camera/light mount; designed for GoPro, Garmin, and Shimano cameras. Features: Stable and secure on center position above cockpit improves video clarity 1-1/8" Steerer tube diameter Precision fit of the mount is critical to both proper headset compression and camera/light security CNC machined, anodized 6061 T6 Aluminum Includes hardware for assembly, two bolt installation Made in USA Lifetime warranty