supply of improved high tensile tight lock center buffer coupler with aar-h type head and balanced draft gear for fitment on bg passenger coaches. , improved high tensile tight lock center buffer coupler with aar-h type head and balan ced draft gear for fitment on bg passenger coaches confirming to rdso specification no. rdso/2011/c g-03, rev.-3, amendment no. 1/2024, consisting of 6 items, sl. no. 1 tight lock coupler head aar-h ty pe with main pin. qty. 1 no., sl. no. 2 balance draft gear. qty. 1 no., sl. no. 3 supporting device with fa steners. qty. 1 no., sl. no. 4 manual uncoupling device. qty. 1 no., sl. no. 5 base plate with fasteners. qty. 1 no. and sl. no. 6 support plate with fasteners. qty. 1 no. matl.& specn : rdso/2011/cg-03, rev.- 3, amendment no. 1/2024. [ warranty period: 84 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]