Open Stock sold in boxes of 6 pencils. Polychromos Artists' Color Pencils are available in 120 colors that are part of a unique color matching system - encompassing all Faber-Castell Art & Graphic products. They contain the highest quality pigments for unsurpassed lightfastness, which is rated on each pencil. They have a buttery smooth color laydown and can be easily blended for layered effects, highlights and transitions. Thick 3.8mm leads are break and water-resistant, smudge-proof and provide permanent, rich color. Provides sharp fine lines and excellent point retention.