Sketch & Wash® pencil cores are bonded to incense cedar wood with our exclusive "Carbo-Weld" bonding process that ensures strength, reliability, smooth sharpening, and durability. Use with brush and water to create dramatic washes of gray and black. Draw directly on wet paper to darken lines and details. Can be combined with watercolor pencils, colored pencils, pen and ink. When dry, can be erased.