Pvc Insulated Cable For Railway Signalling Heavy Duty Under Ground Unscreened Armouned With Galvanised Round Steel Wire And The Conductor Of Plain Solid Annealed High Conductivity Copper Each With Nominal Cross Section Area Of 2.5 Sqmm Conforming To Specn.Ir S. S-63-89 Size 2 Core X 2.5 Sqmm Or Latest. [ Warranty Period: 30 Months After The Date Of Delivery ] ]