Lead: 100% water-soluble, optimal transparency with no veiled effect. Soft, smooth lead with maximal covering power and a high pigment concentration for bright and intense colours. 3.8mm diameter. Can be used both wet and dry.
Lightfastness: exceptional colour lightfastness applied wet or dry, based on the standard Blue Wool Scale, from ** 'Weak' to ***** 'Excellent'. Certain colours will remain unaltered for up to 100 years.