APPLICATION: Polyester thread have a wide variety of uses such as Alterations and Tailoring, Cleaners, Home Sewing, Boutiques, Manufacturers. Is used on Straight Stitch Machines, Serger/Overlock, Zig-Zag, Button Sewing, Buttonhole Machines, Embroidery, Coverstitch Machines, Chainstitch Machines, Multi-Needle Machines, etc ...