AMERICAN & EFIRD-Signature Machine Quilting Cone & Bobbin Pack. This thread is the perfect choice for those purists preferring cotton through and through. This 40wt three-ply, long-staple fiber construction, combined with the mercerization and finishing processes this fiber passes through, all contribute to the superior strength, luster and low lint properties of this high quality thread. And spend more time quilting and sewing and less time winding bobbins with this product. Designed for long-arm quilting machines and produced on A&E's state-of-the-art equipment, these paper sided ready wound M style bobbins have consistent amount of tension and yardage that you can depend on. This package contains one 3000yd king spool of threads as well as 3000yds of pre-wound bobbins. Available in a variety of colors: each sold separately. Made in USA.