Design & Drafting Pencil Set (12 Assortment). Pre SharpenedGlides smoothly over paperPremium quality pencil for designs and draftingContains an assortment of harder lead pencils chosen for their abilityto hold a sharppoint for more detailed workSuperior graphite pencils manufactured from the highest quality materials with maximum point strength, especially break-resistant, easy to sharpen and eraseFinely graded degrees produce clear lines and structures as well as subtle_differentiatedshades of gray and black