supply of complete set of high tensile tight lock center buffer coupler , complete set of high tensile tight lock center buffer coupler with aar -h - type head and balanced draft gear for fitment on bg passenger coaches confirming to rdso specification no. r dso / 2011/ cg-03 (rev.3) amendment 1 of july-2024 consisting of 6 items :- [1] tight lock coupler he ad aar - h - type with main pin- qty-1 no., [2] balanced draft gear - qty-1 no., [3] supporting device with fasteners- qty- 1 no., [4] manual uncoupling device- qty-1 no., [5] base plate with fasteners- qty -1 no., [6] support plate with fasteners- qty-1 no. note : make of silent blocks should be either tvs or gmt as per rdso letter no. mc/blb/cbc dt 31-08-2024. [ warranty period: 84 months after the dat e of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]