Tenders for Supply of Set Of Schaku Coupler Assembly. Semi Permanent Coupler End A With Bea Ring Bracket And Semi Permanent Coupler End B With Bearing Bracket To Rdso Speci Fication No. 61-B-36/Rev. 68-1 Of Nov-2004. Reconstructed November 2004 With Amendment-1 Of Octob Er-2016 Warranty Period: 30 Months After The Date Of Delivery