AIR BRAKE HOSE COUPLING ASSEMBLY FOR BRAKE PIPE, ( of length 790 mm ) CONFORMING TO APPENDIX F OF RDSO SPEC. NO. 02- ABR- 02, Amend. No. 01 of Feb ' 07 & Amendment- no. 4 of Sept. 2016, to RDSO DRG NO: SK- 73547, ALT: 14. Note: The protection cap provided on palm end side should be of thickness 3. 5 mm to 4 mm and cap should be in Red colour. Firm should ensure before supply.