... %spun polyester sewing thread 10/2/3/4-80/2/3/4 2.100%spun polyester yarn 10/1-80/1 3.poly poly core ... AND RING) Paper or Plastic Tube, 20S/2,3,4----80S/2,3,4 Heat Set Yarn, Air Knot, Semi-Dull Fiber ... Core Sewing Thread and Dyed Core Yarn 20S/2,3--80S/2,3 3.100% Spun Polyester YarnVirgin&Recycled20/1-40/1-60 ...