It can be clean during class time Chalk is not easy to break Material: metal Size: 9 x1.3cm Color: Silver color:Silver Instruction 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 time 6. The 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 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 to come out, and the is very simple Package Contents: 1x chalk clip Only 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.