General Pencil Graphite Art Pencil Set: * Non-porous Ceylon graphite cores are dense and durable * Core is Carbo-Welded to withstand 4 times the normal point pressure * Specially treated cedar wood casings sharpen easily * Pencils are pre-sharpened * Includes 3 Kimberly graphite drawing pencils (2B, HB, 2H), 1 Layout ebony pencil and 1 All Art Eraser * Conforms to ASTM D 4236 * Made in USA * Material content: graphite