apply to a car or motorcycle body, frame, chassis ... (4 # characters)Marking Depth0.01-2mm (depending on hardness of material)Marking Accuracy4μmImpact Frequency250 times ... -0.01 mmRelative Humidity25 °C when the "85%Operating SystemWindows 98/ME/2000/XPPower SupplyAC220V ± ... connecting rod, engine, cylinder, and various mechanical parts, machine tools, hardware, metal pipes, gear, pump, valves, ...