Mettler Thread - Silk Finish Cotton ThreadMettler Thread - Silk Finish Cotton Thread at discount prices! Silk Finish Cotton Thread is made of 100% Egyptian long fiber mercerized cotton. This soft shiny thread takes color beautifully, is colorfast and non-shrinking. Mercerized finish decreases snagging, knotting and breakage. Perfect for hand sewing and machine quilting. 100% cotton. 50/3.