supply of carbon brush for eddy current clutch ec-9005/2/ m grade ego to drg. no.3/dcw/m/cb-40 alt. x or latest as per rdso spec. no. mp.o.2400.60 rev. -05 nov.- 2018 andapproval carbon blocks and brush garde as per rdso letter no. sd.dfm a2.2 dt:06.07.2018 .