(24 BX) HYGIEIA DUSTLESS BOARD
This superior chalk is 95% pure calcium carbonate and free of foreign materials that work their way into the board surface causing scratching, streaking and pitting. Round stick 3-1/4" x 3/8" fits most chalk chucks. AP certified non-toxic. Each pack includes 12 sticks in assorted colors. Sold as 24 boxes for a total of 288 pieces.