Couldn't get the original version of the airtag holder to print properly in a format that had a strong bond in the arms, so compeltely re-modeled it to print with layerlines to keep the part strong. Make sure to print on it's end, you'll need support enabled to do this - but you'll get a much stronger part that is less likely to break. Works for flat collars upto 25mm wide, like the origin model.