More details on the GoPro Fusion Mounts
Overview: The GoPro Fusion Mounts let you mount your GoPro Fusion 360° action camera where you want. Four adhesive-backed mounts are included -- two with flat bases and two with curved bases -- along with two thumb screws. Each mount is waterproof, and has industrial-strength 3M adhesive on the bottom of the base. (The adhesive can be removed by heating the base with a hair dryer.)
Dimensions: The curved mounts have a 2.14" diameter round base and 1.255" in height. The flat mounts are 2.125" square and 1.992" high.
Note: The curved mount should not be used alone to mount the camera to a helmet. The GoPro Helmet mount, which includes a mounting buckle, is recommended.