White Paint Marker, Marks On Metal, Plastic, Printed Circuit Boards, Glass, Wood, Paper, Leather, Textiles, & More, Writes On Any Surface Porous Or Nonporous, Rough, Smooth, Wet, Oily Or Dry, Marks Are Permanent, Will Not Chip, Peel, Fade Or Rub Off, Withstands Heat & Weathering Under Adverse Conditions, Unique Precision Valve Accurately Meters Flow, So The Right Amount Of Paint Passes Through The Tip, Long Lasting Replaceable Fiber Tips Allow Full Use Of The Marker.