Onyx Medium Derwent Graphite Pencil A soft graphite pencil that produces very dense, black tones.Perfect for creating really dark images, it allows you to create a darker tone to your sketches.It reaches darker tones than a 9B and you can always play with the pressure to create undertones.Very useful for quick composition, expressive sketches, technical details and architectural drawings.The thicker lead allows you to sharpen easily and maintain a fine point for the smallest details. Brand: Derwent