Mega Genie Magic Bobbin Washers
For sewing machines with size M Bobbin
Eliminates backlash and birds nests on the underside of free-motion quilting, thread painting and embroidery when changing directions at high speed.
Easy to use. Just drop a Magic Bobbin Genie into the bobbin case. Replace bobbin and insert into the machine
Long Lasting. Super slippery, durable teflon