2.1 mm "RED" Plastic Round with Metal Internal Nut! The Plug in part will be flush on the outside of the enclosure.
This takes up more room inside but allows for a Flush fit on the outside.
Works great for adding Color Contrast to enclosures for a professional look!
You cannot go wrong with the shipping on 5 Packs either!
DC Power Jack 2.1mm Enclosed Frame With Switch
Panel Cutout: 10.5mm