... 80mm (special format can be customized)Marking Speed2-4 per second (4 # characters)Marking Depth0.01-2mm (depending on ... may be)Marking Accuracy4μmClick Frequency300 ± 10HzAdjust Range≥ 0.01mmNeedle HardnessHRA92Gas Source0.3-0 .8 Mpa (industrial gas source ... chassis, connecting rod, engine, cylinder, and various mechanical parts, machine tools, hardware, metal pipes, gear, pump, valves, fasteners, ...