... metal or non-metal materialApplycation: It's applicable for the fields of automobile motorcycle parts, merchanism,petroleum ... VIN codes on bodywork of motorcycles,nameplates,connecting rods,engines,mechanical parts,machine tools,metal pipe,gear ... Directionup, down, left, right, circleMarking Characterssizes, spacing for adjustment, character size covers 2-80mm,even biggerImpact frequency: ...