Spool Pin Doilies add a nice touch to your Featherweight! They also help keep the Spool Pin Cover Plate from getting marred by your spool of thread. A nice upgrade from the red felt circle. To apply to the spool pin hold the doily close to the inner hole and put on the spool pin. It may be a tight fit but the hole should stretch just enough to apply. You can also dampen the hole area before applying to make it a little easier. Enjoy!