... × 80mm (special format can be customized)Marking Speed2-4 per second (4 # characters)Marking Depth0.01-2mm (depending on material hardness ... frame, chassis, connecting rod, engine, cylinder, and various mechanical parts, machine tools, hardware, metal pipes, gear, pump, valves, fasteners, and ... , icon, etc.Applicable material: metal, glass, ceramic, plastic Desktop pneumatic marking machine for iron