supply of carbon brush block for traction motor type hitachi hs-15250 a as per rdso specification no.elrs/spec/cb/0027carbon brush block for traction motor type hitachi hs-15250 a as per rdso specification no.elrs/spec/cb/0027,carbon brush block for traction motor type hitachi hs-15250 a as per rdso specification no.elrs/spec/ cb/0027 [rev-0] ofsept.2003 with amendment no.1 date 25.08.2005 and confirming to rdso drg.no.el.3.bs.013 [mod ].alt.5 or latest.the followinggrades are only acceptable- acpl using grade eg-105 (s) imported/indigenous [part-i suppl y] or mersen india using importedgrade eg-9049 [part-i supply]] of mersen /france[ these sources obtain carbon brush blocks for manufacture of brushes fromapproved manufacturer after inspection by rites ] or as per drg.no. mersen indi a using grade eg-8220 [part-ii supply ] ]