Main Spring Assembly For Am-12 Pantograph Conforming To Rdso Specificati On No. Rdso/2008/El/Spec/0066 Rev.'O' Dated 20.6.2008 And Amend 1 Dtd 31.12.08 (Sil Old Pa Rt No.S000228/New Part No.S0221117001 Or Contransys Part No.C0600 Or To M/S.General S Tores And Engineering Company, Kolkatta Drg..No.Gsec/Panto/207 Alt.1 Or To M/S.Concep T Rail Engineers Pvt.Ltd, Kolkattal To Their Drg.No. 0101042. [ Warranty Period: 30 Months After The Date Of Delivery ] ]