GÜTERMANN Extra Strong M 782 is a robust, tear-resistant polyester sewing thread for heavily stressed seams, repairs and topstitching. The No. 40 thread is made from 100% polyester and uses Micro Core Technology for dependable strength on heavy fabrics, woven materials and other sturdy projects. Use with universal needles NM 90–110 for upholstery repairs, bags, outdoor items and decorative topstitch details.