Specifications: The chalk pigments are delicate and the color rendering of the script is very good. It is also very easy to clean. The writing on the board can be erased with a damp cloth. The paper roll is clean and chalk is wrapped and no need for chalk clips. It is widely used for school chalkboards, art, office, home, sidewalk, etc. Item Name: Chalk Material: Eco-friendly Material Quantity: 20 Sticks Features: Portable, Dustless, Easy to Use, Water Soluble Single Chalk Size: Length: 78mm/3.07", Diameter: 10mm/0.39" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 Box of Chalks (20Pcs)