Albrecht Durer watercolour pencils from Faber-Castell are high-quality artists’ water soluble colour pencils. The 3.8mm diameter leads are totally water-soluble and contain superior pigments of unsurpassed lightfastness and brilliance. Available in 120 colours which can be blended with water to form an unlimited number of new hues. Acid Free. Water-soluble 3.8mm diameter leads. Available in 120 colours.