Supply Of Bolster Spring Inner For Blc Wagon. Drawing No. :-contr-9404-s/7, Alt-7, Item No-2. Spec. No :- Wd - 01 - Hls - 1994 Rev. 5. Guarantee :- The Spring Shall Be Guaranteed For A Period Of Five Years From The Date Of Manufacture Of The Spring. For Details Please See Spec. No. Wd-01-hls-1994, Rev. 5.