Sanford uni paint marker, oil-based, medium, assorted ink, 6/set opaque oil-based paint markers are perfect for arts and crafts. Dries opaquely on practically any surface. Weatherproof and fade-proof. Acid-free. Six-color set includes: black, red, blue, green, yellow and white. Acid-free ink/weather proof/fade resistant. this product arrives to most customers in 2-3 business days.