Prang Hygieia Color Chalk - 3.25" (82.55 mm) Length x 0.38" (9.53 mm) Diameter - Assorted - Odorless - Non-toxic - 12 / Box

Dustless chalk in assorted colors is 95 percent pure calcium carbonate and free of foreign materials that can cause scratching, streaking and pitting on board surfaces. 3/8" diameter sticks fit many chalk chucks. Certified AP nontoxic chalk is recommended for ages 5 and up. SKU: DIX61400