Chunky, firm graphite blocks. 8mm square in diameter and 75mm longallow you to produce both broad and fine lines. They are ideal for free, expressive drawing. A degree of natural dusting allows easy blending while applying a little water will disperse the graphite to create interesting wash effects. A versatile drawing media, they are adaptable to the whole range of Derwent pencils. They cover well and by applying pressure, dense tone can be built up.