This Kadink Chalk is great for adding some flair to your artwork. It can be used on paper, chalkboards and even the sidewalk, so you can create your masterpieces in your own unique, personalised way. Each piece of chalk in this pack comes in a round design for an easy, firm grip. Features: The chalk is made out of calcium sulfate. The round design of the chalk pieces allow for a firm grip during use. It's great for customising and personalising your artwork. There are 100 sticks of white chalk in this pack.