GAMMILL THREAD STAND BLADES part #00-2021
These parts help to keep your thread cone centered on the cone holder. The machines come with 6 from the factory, there are 3 on the bobbin winder cone holder, and another 3 on the upper thread cone holder.
View the gallery images to understand where the blades fit on the machine.
PS thanks to www.jukeboxquilts.com for the photo of this part.