This 4-pack of Coats SureLock polyester thread is perfect for all your sewing needs. With 3000 yards on each spool, you'll have plenty of thread to complete your projects. The nickel gray color adds a modern touch to any design, and the thread is suitable for use with overlock machines. These spools are brand new in package, and made from 100% spun polyester. Use them for machine bobbins and thread, embroidery, cross stitch, and more. Get creative with your sewing projects and let this high-quality thread enhance your designs.