Montana Acrylic Paint Marker, 2mm, Fine Nib, Sahara Beige (053188) This marker features a standard tip and produces a brilliant water-based acrylic color that is water-proof, abrasion-proof and fade-free. Can be used on almost any surface (including canvas, Wood, metal, walls and glass). Replaceable 2mm tip For indoor or outdoor use Non-toxic and refillable