Cast Steel Bolster For 22 Nlb (For Modified Separate Type Pivot) As Per Rdso Drg. No. W D-89067-S-4 Alt-13, Matl. & Spec. Must Be Confirm To Spec. No. Wd-21-Casnub-22 Nlb Bogie-93, Rev-2 , Amndt-5 Or Latest. [ Warranty Period: 30 Months After The Date Of Delivery ] ]