Generic Mask Strap Accessory

I'm not sure why so many masks do not have a means to connect a strap. I've created a generic accessory for a mask I printed. You will need to add a pair of negative cylindrical parts to the mask being printed to use the strap connector. Make 7mm holes. Mine were printed in PETG and being tested now. Just glue the pin into the stud. Any comments would be appreciated.