This is a frame for a round pin - a round pin that uses a central pin backing. I had some pins made for Solstice, but their single pin backing (a "rubber pin back") isn't overly great. The pin comes out and gets lost. I designed this pin framing that holds a 2-inch round pin. A "safety clasp" back then slides up at the back, and your pin, held secure enough inside the frame, is then safety-pinned to your collar. If that doesn't make sense, I hope the pictures explain things. If not, let me know. I'll see if I can create a video to explain things more clearly.