Review on 🖊️ Koh-I-Noor Wooden Pen Holder with Cork Grip for Drafting and Drawing - Black (127N.BLA) by Linda Diaz

I bought this pen holder to replace a cheap pen holder I bought at an art store here in Washington. While fingers feel good, none of my feathers seem to fit. The part of the pen holder at the tip is a tiny metal cup with a metal ring, prongs(?), I call them prongs. Maybe I'm using it wrong, but my tips don't match up or around these prongs. In the same order I had other feathers as part of the set. They don't fit either. Is there a specific tip this was made for?