Koh-I-Noor Polycolor Drawing Pencil Set, 12 Assorted Colors in Tin contains professional-grade pencils for drawing, illustrating and coloring. The 3.8mm lead contains special oils to create water-resistant, dense and even strokes without using heavy pressure. Colors layer and blend beautifully with no waxy buildup. The broad edge is excellent for shading and the fine sharp point creates exquisite detail. Made from the finest Hardtmuth colors and encased with strong, durable California cedar in the Czech Republic.