NutJob - 8mm Jack Nut Wrench

thingiverse

Designed to easily loosen or tighten 8mm jack nuts that are used on 3.5mm jacks of modular synths. But unlike metal tools, is less likely to mar the surface of the device. Small and compact, but tall enough to clear most knobs. Designed to print fast (large clearing hole running through the center, without sacrificing strength. With a flat plane on the back for supportless printing.