If you need to add a compact panel-mount connection but don't have the time or ability to cut a custom oval or square hole, this USB Micro B Small Round Panel Mount Extension Cable is the easiest and fastest way to panel-ify your project. The adapter can fit holes 12mm to 18mm, 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 micro B jack and plug for connecting any cable.It's designed to easily attach to a panel up to 13mm thick (or 0.5"), or as thin as a few mm. Perfect for adding a USB micro B port to your project enclosure! We like this plug in particular for its solid body, small aperture, and 'forgiving' plastic lip that hides the drill hole. It also comes with a cute protective cap that can be used to protect the port, or cut off with scissors if you prefer.Features: Fits panel holes from 12mm to 18mm diameter Easy installation with plastic nut Supports panels up to 13mm thick Includes protective cap for the port Solid construction with small aperture for neat installation Technical Details and Diagrams: Diagram 1 (PDF) Diagram 2 (JPEG)