Airsoft Fast Loader Handle

Requires an M3x8 or M3x6 brass thread insert and an M3x16 screw, push the insert in and thread the screw in through the handle on the loader and your 3D printed handle and screw in until tight, this should leave some play between the 3D printed handle and the speed-loader's handle which will allow the 3D printed handle to spin as you twist.

I also used a smidge of super glue on the insert to ensure it won't go anywhere.