... polyester 1.2DX38MM 2.Ne20/2,3,30/2,3,40/2,3,50/2,3,60/2,3 3.200M,100M Polyester Sewing String Features ... thread sizes to minimize seam pucker or needle cutting • 40% stronger than 100% cotton threads of the same size. ... 2 50S/2 60S/2; 12/3 16S/3 20/3 30/3 40/3 50/3 60/3.2.TFO and Ring twist ones ... are both available.3.High strength, low-elongation, ...