24 watercolor pencils. Lead measures 2.9 mm in diameter. Ergonomic triangular shape. The use of watercolor pencils combines the versatility of watercolor with the precision of colored pencils. They can be used dry or wet, or by combining both techniques. The lead creates a uniform stroke and is designed with a unique anti-break system, the Lead Protection System (LPS), where the lead is reinforced by being glued to the wood. The wood comes from sustainable plantations. Each color has its own name. Includes a series 101 school paintbrush.