The Caran d'Ache Technalo Pencil is a water-soluble graphite pencil, manufactured in a classic hexagonal shape. The pencil is versatile for all forms of drawing and art, and can be used on it's own, or with water and a brush to create brush strokes. The intensity of the pencil added to paper will determine the intensity of your brush-marks. This is a great tool for wash drawings and preparatory work.