The provided print file is highly unoptimized but designed to be easily printed
DISCLAIMER: This model features a screw for holding the key in place. I recommend screwing a METALLIC M6x1 through the hole before first using it to properly remove the thread imperfections and not strip out your plastic screw in the future. The threaded hole is designed with an offset for smoother usage.
With the screw moderately tight the Allen key does not slip at all even for the hardest of screws. I've tested this myself.
Additionally, in the print file given, the screw itself is at 70% infill to reduce the possibility of it snapping.
Printing recommendations:
The author marked this model as their own original creation.