4 Sq.Mm, Gnye Colour, Electron Beam Irradiation Curing Process Thin Walle D Flexible Elastomeric Cable With Copper Conductor Suitable For Rolling Stock Applica Tion, Conforming To Rdso Spec. No. Elrs/Spec/Elc/0019, Rev.4, Feb-2018, 1.8 Kv Grade. [ Wa Rranty Period: 30 Months After The Date Of Delivery ] ]