supply of aar-h type tight lock coupler head assembly as per sanrok drawing 1ed-1013 and confirming to rdso specification no. rdso/2011/cg-03 rev.01. make-sanrok.aar-h type tight lock coupler head assembly as per sanrok drawing 1ed-1013 and confirming to rdso specification no. rdso/2011/cg-03 rev.01. make-sanrok.,aar-h type tight lock coupler head assembly as per sanrok drawing 1ed-1013 and confir ming to rdso specification no. rdso/2011/cg-03 rev.01. make-sanrok. (note : material need to be supp lied in assembled condition as per drawing) [ warranty period: 48 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]