On chalkboard surfaces, "La Craie Mademoiselle" Coated Chalks are dry wipeable. After use, hands should be washed. "La Craie Mademoiselle" Coated Chalks are superior quality and are 85mm long and 10mm in diameter. They are available in packs of 10 white or 10 assorted coloured chalks, or various packs of 100 chalks.
Price per pack.