Check the listing for details. 150D Waxed Thread 1061 Yards Polyester Leather Sewing Waxed String Dark Grey. Condition: New. Listed at 23.77 USD. Thread Diameter: 150D / 0.8mmTotal Length: Approx 1061 Yards / 970m (Each Roll)Material: PolyesterColor: Dark GreyPackage Contents: 1 Roll Flat Waxed ThreadLeather thread cord is made of strong and reliable polyester material with high tensile strength and good abrasion resistance., not easy to break, waterproof and non-fading, waxed coated not easy to knot or dye, the appearance remains bright after long-term use.Our wax thread is waxed lightly and continuously at high temperatures. The uniform wax coating allows the polyester wax thread to penetrate the leather fabric more smoothly, reducing resistance during sewing and improving work efficiency. The coating also gives the polyester wax thread a certain degree of adhesion, which helps to fix the position of the stitches and prevent them from loosening.