... European standard EN1492-1: 2000, JB/T-8521 Lifting capacity: 1t, 2t, 3t ... 40t Sling width: 25mm, 50mm, 75mm .... ... different widths, and the color line. Two, rounded sling (cable) Round sling: Material: 100% polyester high tenacity polyester industrial ... 1t, 2t, 3t ... 500t Different sling to distinguish between different colors, different widths, and the color line. Three, tied with and Ratchet ...