Paint marker is designed for indoor & outdoor use where you need permanent indelible marking. Writes on any surface including metal, rubber, wood, glass, plastic & stone. Quick-drying, highly water-resistant & fade-resistant ink. Paint marker provides a dense & crisp color even on dark & transparent surfaces. Each marker has a spare acrylic fiber nib. Offers durable aluminum barrel & 2.3mm bullet nib. Nonrefillable.