Product name:300D/3 polyester high-strength silk thread Main material: 100 percent polyester Color: Multicolor non-obligatory Weight: about 145G Length: 300D/3 about 1200M , 210D/3 about 2000m , 150D/3 about 3000m Tensile strength: 300D/3:>5 210D/3:>3 150D/3: >2 Elongation at break: 300D/3:11 210D/3:9 150D/3: eight Mainly relevant to: 210D/3,300D/3:Leather shoe products: leather shoes, leather-based bags, handbags, leather gloves, luggage, leather clothing, etc; Thicker fabrics: travel bags, tents, fabric sofas, bedding, automobile seat belts, etc; 150D/3:Thin materials and leather: wallets, raincoats, leather coats, snow strands, and many others