Hygieia Dustless Board Chalk, Yellow, 12 Per Pack, 36 Packs

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. Sold as 36 packs for a total of 432 pieces.

Key Features :

i : This superior chalk is 95% pure calcium carbonate
ii : Free of foreign materials that work their way into the board surface causing scratching, streaking and pitting
iii : Round stick 3-1/4″ x 3/8″ fits many chalk chucks