Derwent's Graphic Pencils are made from the finest quality graphite and purest clays for a smooth line. They are ideal for crisp, detailed illustrations or tone drawings. Soft Sketch, Set of 12 - A range of 12 soft pencils, ideal for drawing and sketching. Includes one each of 9B, 8B, 7B, 6B, 5B, 4B, 3B, 2B, B, HB, F, and H. Medium Designer, Set of 12 - A range of 12 medium pencils. Includes one each of 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, and 4H. Hard Technical, Set of 12 - A range of 12 hard pencils, ideal for drafting, engineering, and technical drawing. Includes one each of B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, and 9H.