These superior artist-grade pencils range from soft to hard leads and accommodate a variety of drawing and sketching techniques such as cross-hatching, overhand grip, smudging, and more. Castell 9000 Graphite Sketch Pencils are made of finely ground graphite and clay for smooth, non-scratchy performance. The pure graphite leads are housed in a break-resistant, SV-bonded casing made with wood from sustainably managed forests and coated with water-based varnish. Their durability and consistency make for smooth drawing, clean erasing, and easy sharpening. The leads range from soft (B) to hard (H) to help build rich, dark values or keep sketches light. Pencil sets are packaged in an attractive tin for protection and organization.