Hagoromo Fulltouch Chalk

“Many breakthroughs of mathematics were discovered using this brand of chalk. These breakthroughs may or may not include Terrence Howard’s Postulate of 1x1=3. also a great, near-powderless chalk for sign writing.”

“Absolutely the Rolls Royce of chalk. Cult following. I have a little stash of it even though I’m not a mathematician with a chalkboard.”