... 100% Polyester sewing thraed 2. Count: 15/2, 20/2, 20/3, 20/6, 30/2, 30/3, 40/2, 40/3, 50/2, 50/3, 60/2, 60/3 and 80/2 ... different colors, also buyers' colors are acceptable5. Quality class: we have two kinds, ring yarn and two-for-one yarn, for TFO yarn ... we can guarantee less one knot each cone in 5000yds. For other quality technical index please contact with us 100% Polyester Sewing Thread