supply of schaku semi permanent couplerschaku semi permanent coupler,schaku semi permanent coupler end a for emu m/s escorts drg. no. 40- 586 a(0) and sk-75 0 or similar specn: rdso spec. no. 61-b-36/rev-68-1(reconstructed november 2004) amand 1,october-20 16. {item is reserved for rdso approved source only. sub item id:-3100362001.} [ warranty period: 30 months after the date of delivery ] ] , schaku semi permanent coupler end b as per drg.no. m/s escorts drg. no. 40-587 a (0) an d sk-751 spec: rdso spec. no 61-b-36/rev-68- 1(reconstructed november 2004) with amendment no.1 o f october- 2016. drg.no.:m/s. escorts drg. no.40-587 a (0) and sk-751{item is reserved for rdso approve d source only. sub item id-3100362001.} [ warranty period: 30 months after the date of delivery ] ]