beautiful and durable The best choice for each wise customer,can be present as gift Saving chalk, avoiding the use of chalk in the process of being broken. , chalk sets in the same round has a piece of chalk, is the same thickness. Each holder has previously placed a piece of chalk Use ordinary pen clip mechanical pencil similar: 1. Place the chalk from the front into the chalk 2. Press the rear end of the spring clip Chalk, the front opening and open 3. Adjust the length of chalk writing, and then release the grip on the rear end. 4. normal writing on it. not only beautiful, but also strong and durable. Use it to write can reduce pollution chalk opponents and clothing cuffs, no longer worry drying and peeling finger. Color: Random color, don't accept the specified color. Material: plastic size: 8.9 x 1.6CM Package Contents: 15 x Chalk set 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.