Derwent Artists ONYX Smooth Graphite Pencils Technical Architectural Drawing
Derwent Artists ONYX Pencils
Derwent Onyx Pencils are made from smooth dark graphite and allows you to instantly create dense rich jet-black tones, even darker than a Graphic 9B. Its 4mm wide core has a non-crumbly texture which will sharpen and hold a fine point for longer. Blend it with your finger tip or a Tortillon. Equally good for quick expressive sketches as well as detailed technical and architectural drawings.