Lyra graduate aquarelle pencils are easy-to-use watercolor pencils that are perfect for creating infinite shades. Made with long-lasting and super-resistant lead that is 3.8mm diameter. The extra durable, water soluble core provides a smooth laydown. The pefc-cedar wood casing are easy-to-sharpen. Each metal box includes 12 pencils. Sold as 2 boxes for a total of 24 pencils.