Composite 9 Tonne Insulator (Very Heavy Polluted) With Cd Of 1600 Mm As Per Rdso Spec: Ti/Spc/Ohe/Inscom/1072 Or Latest. Rdso Approved Make Only Acceptable.Warranty Period: 30 Month(S) From The Date Of Supply. [ Warranty Period: 30 Months After The Date Of Delivery ] ]