Product Overview: Prima Dustless Chalk provides smooth, clean writing on boards without dust, making it ideal for schools, offices, and other environments where clean chalk is necessary. Key Features: ‣ Set includes white and colored chalk ‣ 10 pieces per set for extended use ‣ Ideal for schools, offices, and educational use Specifications: ‣ Dimensions: Standard ‣ Material: Chalk ‣ Quantity: 2 sets