supply of semi permanent coupler endsemi permanent coupler end,semi permanent coupler end a conforming to rdso specification no. 61- b - 36 , rev.68-1 with amendment no. 1 of october 2016 and to m/s. escorts make drg no:sk-750 co nsisting of 5 items: 1) intermediate tube to escorts drg.no. sk-754, 2) air pipe coupling (co mplete) to escorts drg.no. sk-198, 3) draw and buff gear to escorts drg.no. sk-752, 4) adj ustable cup sleeve.to escorts drg.no. sk-755, 5) centering device (sub-assembly) to escort s drg.no. sk-756 or m/s.wsf make or m/s. sanrok enterprises make or equivalent rdso appr oved make for emu / memu application. [ warranty period: 30 months after the date of delivery ] ] amm/tsd/avd, sr tamil nadu 41.00 numbers