A little doily goes on the spool pin of your sewing machine and helps the spools of thread from scratching your machine as they spin. It also helps keep the spool form continuing to spin when you stop the machine. These doilies replace the felt on the machine. They are and functional.
There are two sizes. One is for the top spin and another for the low spin. The price is for one doliy. Please refer to the pictures for the actual colors.
I use the vintage cotton thread number 30 to match your vintage sewing machines. It's from a pet free and smoke free home.