Refrigerator Split Plug

I needed a passthrough plug for a thermometer to go through a door. The end was much bigger than the wire and didn't want to fill a hole with caulking. I printed this plug and it feed through the door and is captured by a nut on the back side. Looks much better. The hole is less than ½" so I could drill a hole with a bit I have and it would be covered up by the plug.