1.Light, soft, high safety factor, long life, 2.non-conductive, no risk of electric shock, ... sling: Material: 100% polyester high tenacity polyester industrial yarn Safety factor: 6:1, 7:1,8:1 Production standards: ISO4878 international ... sling: Material: 100% polyester high tenacity polyester industrial yarn Safety factor: 6:1, 7:1,8:1 Production standards: ISO4878 international ...