This set contains 8pcs 6mm bright colored water soluble chalks for all kinds of craft projects. Made of premium material, it is safe and non-toxic. The acid-free ink flows smooth and doesn't bleed on marker paper. They are easy to hold and use, providing great visual results. A nice choice for art class or family recreation.Feature- Color: As shown.- Material: PP.- Size: About 14 x 1.6 x 1.6cm(LxWxH).- This set contains 8pcs 6mm bright colored water soluble chalks for all kinds of craft projects.- Kid-friendly, and acid-free ink flows smooth and doesn't bleed on marker paper.- Chalks are easy to hold and use, providing great visual results. Ink flows smooth and blends well.- Easy to "self-clean" after blending by scribbling on a separate piece of paper, thus returning the marker to its original color.- The chalks are easy to hold and use, providing great visual results. A nice choice for art class or family recreation.