1/4" Dropper Cap Capper

I got SOOOOOooo tired of screwing the little lids on. So, I made a 1/4" drive, so it can be used in a little screw gun. I also made a pocket for a tiny neodynium magnet. The magnet is 4.4mm X .8mm, with a bit of epoxy underneath. I attached a screen shot to show, how I made it a 1/4" drive. Grab some sort of "nut.stl" and reduce in size till you see the tiniest portion of the shaft, as shown. No supports are needed.

Somebody give it a better name, please.