PRESSURE TRANSFORMER REF PART NO. DU 111A OF ESCORTS/ KNORR BREMSE WITH 04 NOS OF HEX. HD BOLT M12 X 130 CONFORMING TO IS: 1364; 2002 ( PART- I ) ALONG WITH APPLICATION CHOKE TO PART NO: 199 AND RELEASE CHOKE TO PART NO. 198 OF ESCORTS/ KNORR BREMSE FOR BOBR, BOBRN, BOBYN WAGONS.