It can be kept clean during class timeChalk is not easy to breakMaterial: metalSize: 9 x1.3cmColor: Silvercolor:SilverInstruction manual:1. Reduce chalk opponents and contaminated clothing;2. Let your fingers no longer to worry about peeling;3. Let your delicate lubricated by hand is no longer chalk harm;4. Save chalk, chalk avoid being broken during use;5. Can be used for a long time6. The teacher's essential goods and exquisite senior gifts;7. This product is suitable for ordinary schools with a diameter of ordinary chalk 9-10mm(If you have not reached the end of the 9 mm chalk, chalk this may be too thin, too many places to go on a folder).If you can put a large chalk chalk sets apart the front end of the clip pull bigger.Chalk off accidentally inside, open the upper end of the small white cap,Top with a pencil, pen able to come out, and the method is very simplePackage Contents:1x chalk clipOnly the above package content, other products are not included.Note: Light 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.