Airtag holder for 30mm dog collar

This is an Airtag holder for a large pet collar. This holder is sized to fit collars 30mm wide and 3.4mm thick. It is a "clean room" remake of a similar holder by Sven ( https://www.thingiverse.com/thing:4853032 ). I made this in PETG-CF because it's what I had on the printer but it would print more smoothly in PLA+ or PETG. It requires four M3x10mm screws and hex nuts to fix it to the collar and so will work with loop collars where a holder cannot be slipped onto the end.