supply of improved high tensile tight lock center buffer couplerimproved high tensile tight lock center buffer coupler,improved high tensile tight lock center buffer coupler with aar-h type head and bala nced draft gear for fitment on bg passenger coaches confirming to rdso specification no. specificatio n rdso/2011/cg-03 (rev.-3) amendment slip no. 1 of july 2024 consisting of 6 items, (sl. no. 1) tight lock coupler head aar-h type with main pin. qty. 1 no., (sl. no. 2) balance draft gear. qty. 1 no., (sl. no. 3) supporting device with fasteners. qty. 1 no., (sl. no. 4) manual uncoupling device. qty. 1 no., ( sl. no. 5) front carrier plate with fasteners. qty. 1 no. as per rdso letter no. mc/blb/cbc dated: 24.0 4.2025 (sl. no. 6) rear carrier plate with fasteners. qty. 1 no. material & specification as per specifica tion no. rdso/2011/cg-03 (rev.-3) with amendment slip no. 1 of july 2024. [ warranty period: 84 m onths after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]