supply of high tensile aar h type tight lock cbchigh tensile aar h type tight lock cbc,aar-h type tight lock coupler head assy as per sanrok drawing 1ed-1013 and confirming to rdso specification no. rdso/2011/cg-03 rev.01. make-sanrok enterprises [ warranty period: 30 months after the date of delivery ] ] , aar-h type tight lock coupler head assy as per sanrok drawing 1ed-1013 and confirming to rdso specification no. rdso/2011/cg-03 (rev.03). (pac item). make: sanrok enterprise-faridabad . [ warranty period: 30 months after the date of delivery ] ] , high tensile aar h type tight lock cbc with transition screw coupling and balanced draft gear with complete all other items for bg lhb coaches and confirming to rdso specification no-rdso/20 09/cg-22 (rev.01) and rdso/2011/cg-03(rev.03) or latest. (to be procure from rdso approved source). [ warranty period: 30 months after the date of delivery ] ]