Dust-free safety: prevent users from inhaling dust, do not directly Contact the chalk, avoid frequent hand washing, and prevent children from eating by mistake Easy to use and adjustable-just insert the chalk into the holder and rotate it to the desired length [Affordable] With the stand, the chalk will not break and you can use the last amount Highly compatible-these stands are compatible with all standard chalks Convenient and easy to store: small size and light weight, just put it back in and close it after use, each box can to 5 pieces Washable: It can be easily wiped off or washed without using chemical detergents Colour: as shown Material: Plastic Package Contents: 5 x chalk (green, blue, yellow, white, red) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.