If you need to add a panel-mount connection but don't have the time or ability to cut a custom oval or square hole, this USB C Round Panel Mount Extension Cable is the easiest and fastest way to panel-ify your project. The adapter can fit holes 21.5mm to ~27mm, so you can drill in your wood, plastic, or metal with a common hole-saw or bit, no special shapes or filing required. Un-screw the plastic nut, insert the plug and re-attach. Ta-da! Now you have a USB C jack and USB C plug for connecting any cable.