supply of supporting device to sanrok drg. no. 1ed [supporting device to sanrok drg. no. 1ed-1015 for aar h type high tensile tight lock centre buffer coupler for fitment of bg passenger coaches to rdso spec. no. rdso/2011/cg-03, rev. 01]supporting device to sanrok drg. no. 1ed [supporting device to sanrok drg. no. 1ed-1015 for aar h type high tensile tight lock centre buffer coupler for fitment of bg passenger coaches to rdso spec. no. rdso/2011/cg-03, rev. 01],supporting device to sanrok drg. no. 1ed-1015 for aar h type high tensile tight lock centre buffer coupler for fitment of bg passenger coaches to rdso spec. no. rdso/201 1/cg-03, rev. 01 [ warranty period: 30 months after the date of delivery ] ]