Magic Bobbin Genie's Washers Snap-In size L (12 ct)
Eliminates glitches in the bobbin case. Easy-to-use Teflon washers simply drop into your bobbin case, and you're ready to go! Eliminates the backlash and bird's nests on the underside of free-motion quilting when changing directions at high speed. Package of 12. Tough and long-lasting.