... We could offer the webbing sling ,round sling as follows: 1) Material: polyester, nylon, polypropylene 2) Color: as code for example ... green,3ton yellow10ton orange3) Length: as required4) Safety factor: 5:1, 6:1, 7:1 or 8:15) Standard: ISO4878, EN1492:2000, AS-Standard6 ... half min M.B.S. the belt stretch less than 7%.9) with GS logo