Pilot Arc Start increases utting capability and cutting speed, it also improves working lift of torch parts Contact and HF ignition are changed automatically according to torch 100% High Duty Cycle at 100amps and 40°C æmm Cutting Thinckness is available Grid Cutting is available Air Flow Checking function is included Built-in protection Circuit of over temperature and over voltage and over current for better reliability CNC Cutting Function and Connector is optional.