Thumb Screw For Phanteks cabinet

Thumbscrew for my PC cabinet (case).

The thumbscrew that comes with Phanteks cases are too small, for my fingers anyway, I can tighten them, but when they sit for a while, I need tool to remove them, which defeat their purpose.

I have not figured out how to get small parts to fit with tolerances, on my cr-10s, yet, so I did not get the diameter for the bottom part of the screw correct, but if you take a 6,5 mm drill and correct this, they fit pretty snug.