Fixed And Mobile Contact Tips For C-118 Contactor As Per Drg.No. Elw/Bsl/4/F90.248 Alt-1 ( Ref 1&2 Assembled) But Item No.-2 Composition For Tips Copper-30 Percent , Tungsten-70 Percent (Nickel Coated) In Piace Of Silver Tips. Item Required With Material Test Certificate.