Pitt Charcoal is produced from a fine mixture of soot and charcoal. Pitt Compressed Charcoals are of the highest quality and offer the deepest possible black stroke. This is the ideal set for the artist who enjoys working with charcoal.Details:Includes assorted pieces24 piecesContents:8 Pitt compressed charcoal sticks (2 extra soft, soft, medium, hard)4 Pitt natural charcoal sticks (5 mm to 8 mm)4 Pitt natural charcoal sticks (6 mm to 11 mm)3 Pitt Natural charcoal pencils (soft, medium, hard)3 Pitt compressed charcoal pencils (soft, medium, hard)1 Kneadable art eraser1 Blending stump