supply of set of items for bmbs wagons consist of (i) hose assembly 1inch with flange to kbi part no.i.4.2036 -2 nos( ii) o-ring for 1inch hose assembly to kbi part no a27763/17ki -2 nos.specn rdso' s spec. no.wd-23-bmbs-2008 (rev.-1) with amnd.no.1 of sept. 2016 [ warranty period: 36 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]