Flag holder with four screw holes and designed to hold a 1" diameter flag pole. I've also included a plug that can be used to prevent rain water from entering the holder when a flag pole is not present.

I printed the holder with 0.2mm layer height, 50% infill, 4 perimeter shells, and 5 top and bottom solid layers. The plug can be minimally printed since it has no need for strength.

Enjoy!

Update 2018-06-18 Added v2 of the holder which is a bit stronger and v2 of the plug which is better at keeping water out of the holder.