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. Includes 2 sets of 12 assorted colors, giving you a total of 24 watercolor pencils. Sets come in metal boxes to keep the pencils safe and organized among your other art supplies.