Koh-I-Noor Progresso Woodless Graphite 4-Pencil Set, HB, 2B, 4B, 6B Degrees, 1 Pencil Per Degree, 4 Pencils Per Pack contains rich, pigmented, solid color encased in lacquer. Five times the color as wood-cased pencils, these woodless pencils feature excellent laydown properties for layering and blending without waxy buildup. Create dense, even strokes without the use of heavy pressure. They maintain excellent light permanency, producing vibrant, durable pieces of art. Made in Czech Republic. Bringing you the best in professional drawing and design - Koh-I-Noor.