1.Light, soft, high safety factor, long life, 2.non-conductive, no risk of electric shock, 3.good corrosion resistance . A flat sling webbing sling: Material: 100% polyester high tenacity polyester industrial yarn Safety factor: 6:1, 7:1,8:1 Production standards: ISO4878 international standard, European standard EN1492-1: 2000, JB/T-8521 Lifting capacity: 1t, 2t, 3t ... 40t Sling width: 25mm, ...