Watercolour pencil. 3.3 mm lead. Excellent lightfastness. Soft, vibrant colour laydown. Highly pigmented. Fully water soluble lead. High break resistance due to secural bonding process (SV). Easy to sharpen with all normal pencil sharpeners. Caution: Avoid dipping watercolour pencils in water. Tin of 24. Available in individual colours and various assorted sets.