supply of improved high tensile tight lock centre buffer couplerimproved high tensile tight lock centre buffer coupler,improved high tensile tight lock centre buffer coupler with aar h type he ad and balanced draft gear for fitment on bg passenger coaches conforming to rdso specification no. rdso/2011/cg-03 , rev.3, amendment no.1 consisting of 6 items: full descrip tion attached in documents. [ warranty period: 84 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] carr. repair stores/tpty, andhra pradesh 67.00 numbers