supply of piston for automatic pressure modification device of air brake wagonshaving bmbs knorr pt. no. 771113 (it. no.10) or prag pt. no. 771113 (it.no.10), confirmingto rdso spec.no.wd-23-bmbs-2008 (rev.1) with amend.-1 of sept. 2016 & drg. no. wd-08096-s-01 alt.-01 or latest. suitable to fitment for 10 inch brake cylinder [bmbc] withinbuilt slack adjuster of air brake wagons having bmbs confirming to rdso spec.no. wd-23-bmbs-2008 [rev.1] with amendment-1 of sept.2016 and drg. no. wd-08095-s-01/02.
