Parts list: № Number Qty Name Options 1 AL160421 1 Pneum Internal Half Coupler M16 X 1.5 1 AL225796 1 Pneum Internal Half Coupler M22 X 1.5, SUB FOR AL217440 2 AL160422 1 Pneum External Half Coupler 3 L215131 1 Screen USE WITH AL217440 OR AL225796 4 L221128 1 Dust Shield 5 L172646 1 Dust Shield Next page: ST508678 Valves, Couplers, 2 Line Air Trailer Brake System, W/O Front Axle Brake ST848739 Control Valve / Couplers, Single Line Air Trailer Brake System, Attachment ST773723 Compressor Lines / Holder ST786566 Mounting Parts, Pneumatic Trailer Brake, Single Line System ST854131 Attachment, Duo-Matic Quick Coupler, Air Trailer Break ST786678 Coupler / Lines, 2 Line Air Trailer Brake System, Attachment ST775020 Lines / Fittings, Pneumatic 2 Line Trailer Brake Valve ST775022 Lines / Fittings, Pneumatic 2+1 Line Trailer Brake Valve ST848699 Attachment, Air Trailer Brake System