Made with fine quality oils, pigments and waxes Usable on most surfaces, including paper, board, canvas and wood. Creates a wide range of effects, from subtle shades to bold strokes. Non-toxic formula for safe use. Conforms to ASTM D 4236. Sakura Cray-Pas Expressionist Oil Pastels, 2 3/4in. x 7/16in., Assorted, Set Of 25 is one of many Oil Pastels available through Office Depot. Made by Sakura.