Parts list: № Number Qty Name Options 1 AL68571 1 Hitch Coupling (Red) (2 - Line System) 2 AL217439 1 Quick Coupler (Yellow) (2 - Line System) SUB FOR AL68572 APPL 3 L215131 1 Screen USE WITH AL217439 Next page: ST519500 Valves, Couplers, 2+1 Line Air Trailer Brake System, W/ Front Axle Brake ST854132 Duo-Matic Quick Coupler, Air Trailer Break ST854131 Attachment, Duo-Matic Quick Coupler, Air Trailer Break ST838008 Couplers, 2 Line Air Trailer Brake System, (For United Kingdom) ST786543 Accumulator / Control Valve / Air Compressor / Lines, 2 Line Air Trailer Brake System, W/ Front Wheel Brake, Attachment ST814251 Wiring Harness, Air Trailer Brake ST775022 Lines / Fittings, Pneumatic 2+1 Line Trailer Brake Valve ST775020 Lines / Fittings, Pneumatic 2 Line Trailer Brake Valve ST487115 Valves, Couplers, 2 Line Air Trailer Brake System, W/ Front Axle Brake ST477429 Couplers, 2+1 Line Air Trailer Brake System