A must for all classrooms and homeschoolers who want to create the very best chalkboard drawings. The strong color pigments in Mercurius blackboard chalk allow for luscious applications. The colors have a high coverage and are still easily blended on the board. The square-shaped chalk has a removable paper wrapper to stop color from getting onto the fingers. Intended for art and not writing or sidewalks.The 12 colors follow the Stockmar color range. No harmful ingredients or chalk dust, all natural. Is safe for children 3 and older. Contains no soy, dairy, egg, nut products. Colors: carmine red, vermilion, orange, golden yellow. lemon yellow, pale green, dark green, dark blue, red violet, red brown, cobalt blue, pale flesh Made in Germany