This file requires no supports. print it at 0.16mm layer height for best results. Print it on the flat side, you may need to rotate it 45 degrees to fit it on your print bed. You will also need two of the keys to help keep the two halves together while gluing it. Once you've printed both halves and both keys just use some super glue, avoiding the tap hole at the bottom. After letting the glue cure you should have a nice, new tap handle for your keg!
The handle shown has lettering on it which I removed for this file.
If you have any issues with printing this, please let me know, it's currently a work in progress.