supply of semi-permanent coupler end-semi-permanent coupler end-,semi-permanent coupler end-b conforming to rdso specification no.61-b-36, rev -2, and to s chaku drg no. 40.587 a (0) consisting of 6 items [1] bearing bracket with support to schaku drg no.40.588. 07(2) [2] draw and buff gear to schaku drg no. 40.586.06(2) [3] intermediate tube to schaku drg no. 40.58 6.01.01(2) [4] centering adjustment device .schaku drg no. 40.1000.10(2) [5] centering carrier to schaku d rg no.40.318.13(4) [6] air pipe coupling (complete). to schaku drg no. 40.587.04(3) note: to be procured fr om rdso approved sources only. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: m ax 8 lacs ] ]