Derwent xl graphite blocks 6pk will create sensitive line work and subtle blending to expressive marks and deep tonal work the set of 6 colours will sit very comfortably in the palm of your hand due to the chunky dimensions which enhance their balance and handling the blocks are extremely responsive to variations of pressure and can create inspirational marks and an extensive range of tones to add character to your piece they also offer further potential as the blocks are water soluble too