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. Includes 12 yellow sticks per pack. AP certified non-toxic.
- This superior chalk is 95% pure calcium carbonate.
- 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 many chalk chucks
- Special mineral cohesion agents ensure clean, dust-free use.
