Cretacolor Artist Pencils are excellent for combining with Charcoal, Sepia and Sanguine. Use them to add highlights or smudge with darker tones to lighten. Beautiful effects can also be created when working on a dark, textured surface. Ideal for sketching and drawing.Details:Available in multiple colors18 pencilsThe hardness level is mediumHigh lightfastnessMade with high quality pigmentsWorks well by mixing and smudging with other products