sewing thread have 20s/2,20s/3,20s/6,30s/2,30s/ ... ,60s/2,80s/2,80s/3 and so on . sew thread 1.for all kinds of fabrics, including cotton, synthetics, mixed ... , ideal frictional properties, and sewability 4.the net weight per cone is in the range of 95-237g 100% polyester sewing ...