Chameleon Ultra 2.0 Rugged Keyring Body

I ordered some Chameleon Ultra 2.0 NFC/RFID Emulators (~23 EUR) but these did not contain a good way to put them on your keychain. For who is unfamiliar, it's like a small Flipper Zero reader/emulator/writer.

The models already available are not suitable for me. Too thin, too brittle keychain ring or left holes in the print due to bad dimensions.

I just wanted a rugged base, thick solid ring for my keychain and still good looking.
So I designed my own, based on the original (purple in de images). 
I made the holes for screws and buttons a bit tighter and removed empty cavities where possible. 

This is printable without brim/supports.
I printed in Prusament PLA, 100% infill, 0.10 layer height.

For best results set printer settings > advanced > external perimeters first (expert setting). This is due to the thin walls, else you will see on the outside where they get more narrow. Using this setting it's really smooth!