Binney & Smith Crayola(R) Drawing Chalk, Assorted Colors, Box Of 24 This package contains twenty-four 3x5/16 inch chalk sticks in assorted colors This chalk produces strong brilliant colors for artwork and paper and surfaces other than chalkboards Chalk can be blended directly by applying one color over another or by rubbing with fingers This package contains twenty-four 3x5/16 inch chalk sticks in assorted colors Non-toxic and conforms to ASTM D4236