Opaque oil-based, valve-action paint makes bold marks Create glossy or opaque marks clearly on light or dark surfaces. Marks on virtually any surface including glass, metal, wood, rubber, stone, plastic, paper, vinyl, leather, canvas and more. Quick-drying ink formula. Fade, water- and abrasion-resistant. Certified AP nontoxic. Sanford Markers & Highlighters part of a large selection of office supplies. Sanford(R) Uni-Paint(R) Markers, Medium Point, Black, Pack Of 12 is one of many Art Markers available through Office Depot. Made by Sanford.