Yonger 5pcs Chalk Holder Case Chalk Set Plastic Case for School Office Easy to use and clean. The material of the material is not easy to be broken and is economical. 5 colors. Blue.Red.Yellow.Green.Rose Red, beautiful and durable. Dimensions: 9.5 x 1.5 cm, comfortable to use, and save on chalk. With a chalk cover, you don't have to worry about a lot of chalk dust on your hands, and you don't have to worry about scratching your hands when you write.