144 Prewound Style A, Class 15 or 156, 60wt (60S/2), Polyester White Bobbins for Babylock, Bernina, Brother, Janome, Kenmore, and Singer Embroidery Machines from Embroidio Spend more time doing what you love and less time winding bobbins Fewer thread breaks and machine jams with high quality thread Equal or better quality and weight than top brands Works with most home embroidery machines (see details) 100% no questions asked money back guarantee