supply of blind socket assembly with locking arrangement suitable for inter vehicular coupler (zs coupling 400a,750 v)for lhb type a.c.coaches as per drg.no. l w 71302 of rdso specification no.edts-105 (rev.e) amend.no.1&2 or latest.blind socket assembly with locking arrangement suitable for inter vehicular coupler (zs coupling 400a,750 v)for lhb type a.c.coaches as per drg.no. l w 71302 of rdso specification no.edts-105 (rev.e) amend.no.1&2 or latest.,blind socket assembly with locking arrangement suitable for inter vehicular coupler (zs coupling 400a,75 0 v)for lhb type a.c.coaches as per drg.no. l w 71302 of rdso specification no.edts-105 (rev.e) amend.no.1&2 or la test. ]