Prang Nontoxic Chalk Sticks - 3.3", White - 288 / Carton (DIX31144CT) Case of 288Nontoxic chalk sticks feature a dustless design to create clean, distinct marks for maximum visibility. High quality construction is made with 95 percent pure calcium carbonate without any foreign materials to prevent scratching, streaking and pitting. Plus, its durable design resists breaking to prevent wasteful use. Round chalk sticks are compatible with most chalk holders (sold separately). General Information Manufacturer: Dixon Ticonderoga