... 80mm (special format can be customized)Marking Speed2-4 per second (4 # characters)Marking Depth0.01-2mm (depending on material ... hardness may be)Marking Accuracy4μmClick Frequency300 ± 10HzAdjust Range≥ 0.01mmNeedle ... Application: apply to car or motorcycle body, frame, chassis, connecting rod, engine, cylinder, and various mechanical parts, machine tools, hardware, ...