The chalks are enough for your daily use and replacement. Dust- chalk is safer and prevents children from inhaling dust, especially for kids and teachers and those who have skin. Great for for school, office, meeting room use. Features -Color:Assorted Color -Material:Gypsum -Size:7.50X1.00X1.00cm/2.95X0.39X0.39in -Size:11.00X5.50X3.00cm/4.32X2.16X1.18in -Size:9.50X1.80X1.80cm/3.73X0.71X0.71in -Note: Random Color of the Accessory - Dustless chalk is designed to be clean and easy to use, come with chalk holder for easy to use. - Sufficient quantity to satisfy your daily requirements for usage and replacement, meeting your diverse needs. - Dustless chalk set, perfect for use by teachers, students, artists, and anyone else who wants to write or draw with ease and cleanliness. - The included chalk holder is convenient to use and clean, and can prevent the chalk from cracking. - Dustless chalk lasts longer, perfect for use in areas with limited ventilation or where dust can be a health . Package list: 2 x boxes of Dustless Chalks 2 x Chalk Holders 1 x Eraser