Shimano crank cap tool - minimal

Simple Shimano crank cap tool inspired by the design by T70E. This one is closest to the original, and I like it because it's really small and does not take up much room in a tool box. (see the photo with an earlier prototype in my toolbox) Very little grip, designed to be used with a 4mm wrench, but resist the temptation to tighten it too much.

Prints just fine at 0.3mm with no supports. The print with the world champs' stripes took six filament changes with most of them no more than a minute apart. Looks cool, but slowed the print way down.