Hi polymer is standardblyanten in dè most of pentels pencils. Founders have one much high grafitandel past, the laws considered lining to be one of dè best on market.If one consider founders under one microscope, can one actually see it svampelignende structure, there makes founders additional strong past, the laws resistant package contains 12 founder past, the laws fas in more different hardnesses. Case is made of 100% recycled material. Brand: Pentel
