SMA spinner thumbwheel

These are 3d printed wheels designed to make tightening SMA connectors on FPV antennas easy to do by hand. You just slip it onto the hex section of the antenna and leave it on there. They make it quick and easy to get a snug connection on your antenna. I find them very useful on my goggles, since I have to remove the antenna in order to fit them in their case when I travel.