Mettler Poly Sheen Thread is the versatile embroidery thread that meets the highest standards in artistic machine embroidery on any material. Poly Sheen Thread from Mettler Thread is also perfect for quilting. 50% stronger than Rayon and perfect elongation means high stitch consistency is assured - you won't have to stop working because the thread breaks. Color Number 15. 40 wt. 875yds.