This is the same as the TC-501A but comes with a pressure regulator and cabinet. This is a well-priced oil less piston air compressor with AUTO-STOP. (The compressor switches off when the airbrush is not being operated). The unit comes complete with a 10' baffle hose, airbrush hose that fits alll Sparmax airbrushes (also compatible with Iwata and other popular Japanese Airbrushes. A 1/4" adaptor is included for American and European hose) and a moisture trap. Nothing else to buy, just hook up your airbrush. · 60 PSI Auto-Stop · Moisture Trap and Filter . Pressure Regulator · Pressure Gauge · Airbrush Holder · One Air hose · Manual On/Off Switch and Carry Handle . Cabinet · 1/8 HP Motor with Thermal Overload Protection 240V/50hz · Air Delivery 20 LPM with a 48dB Noise Rating