[Function]: CUT55A plasma cutter without pilot arc function, It is high frequency 50/60Hz IGBT Inverter 55A Plasma Cutter, The cutting torch need to touch metal get arc starting. Use a PT31 cutting torch [Cutting Thickness]: Plasma Cutter is dual voltage 110/220V, 50% duty cycle, 50/60Hz High frequency, Current range at 110V: 20-35A, Current range at 220V: 20-55A. The maximum cutting thickness is recommended to be 3/8''(10mm) @ 35A 110V, 50PSI; 5/8''(16mm)@55A 220V, 70 PSI. Suitable for alloy steel, stainless steel, mild steel, copper, aluminum, etc [Digital Screen Display]: The screen centrally display parameters such as air pressure, voltage, and current, allowing users to understand the equipment status in real-time and adjust operations in a timely manner, improving operational efficiency. If plasma cutter cannot work, the screen comes with an error code system, making it easy to find out the problems [Air Compressor]: The user can adjust the air pressure through the regulator. The air filter is installed at the rear of the machine with a quick air connector 1/4 NPT connector which can be used after opening the box, The Cutter can be used only after connecting it to the air compressor, We suggest air pressure value for the air compressor within the range of 90PSI, 250L/min [PT/2T/4T/PA Function]: Post-flow cooling time ranging from 3 to 15s extends the torch head and consumables life. The 2T mode on the plasma cutter provides semi-automatic control torch trigger, while the 4T mode enables automatic trigger, free your finger. PA adjusted the time for the pilot arc, Manufacturer: bestarc