Prewound Bobbins (High Tenacity) - Black "L" Style Sideless with Core - Paper and Plastic Sided also available 150 yards of 70D/2 high tenacity filament polyester thread each Convenient prewound bobbins. Black Spend less time winding and more time embroidering L style for Viking, Pfaff, Brother, Bernina, Elna and Babylock. 144 per box