Plastic Sewing Machine Bobbins and Thread: The lightweight plastic bobbins are tangle free, making them sturdy class 15J bobbins for sewing machines, prewound embroidery bobbins thread, and pre threaded bobbins for quilting. SA156 Bobbins Class 15 Type Bobbins: The 15j prewound bobbins for brother sewing machines, Babylock, Elna, Huskystar, Universal, Viking, Sears, Janome, Kenmore, Juki, and Pfaff- fit for most industrial and home standard low shank sewing machines. Reusable Class 15 Bobbins: The fray-resistant j15 bobbins or SA 156 bobbins, designed for hand & machine sewing, can be wound with a bobbin winder. The size A pre-wound bobbins set is easy to use and pairs well with fabric, vinyl, and stabilizers. Class 15 Prewound Bobbins for Embroidery Machines & More: The cream prewound embroidery thread bobbins serve as great Embroidery machine bobbins and sewing bobbins with thread for patchwork, & cross stitch. Bulk Prewound Bobbin Thread: Each prewound embroidery thread bobbins set includes 25 2-ply spun polyester 60/2 sewing cream bobbin thread. Each 0.8 X 0.8 X 0.45 bobbin has 88 yards 90 WT bobbin thread for embroidery machines, total 2200 yards.