Magic Bobbin Washers
These slick space age washers eliminate the backlash in the bobbin when changing directions at high speed.
Backlash creates "birds nests"in free-motion quilting and embroidery.
Just drop a LITTLE GENIE in the bobbin case, replace bobbin and you're good to go!
Fits all domestic machines.
Package of 12.
Tough and long-lasting.