Gfn-66 Insulating Liners As Per Rdso Drawing No. T-3706 ( As Amended Upto Date ) And C Onforming To Irs Specification No. T-44-2020 ( As Amended Upto Date) For Use With Erc Mk-Iii Flat Toe For 60 Kg. Rails On Concrete Sleepers. [ Warranty Period: 30 Months After The Date Of Delivery ] ]