Mega Genies - Teflon® bobbin washers (1 doz/pk)
Special size for longarm machines with a size M bobbin case. EASY TO USE! Just drop a MEGA GENIE MAGIC BOBBIN WASHER into your bobbin case, replace the bobbin, and you’re good to go! Eliminates the backlash and “bird nests” on the underside of the quilt when changing directions at high speed. SAVES TIME! Less stopping and starting.