Derwent Blender pens are designed for use with pencils; they allow the artist to blend away pencil lines, creating smooth and even colour and are effective with both colour and graphite pencils. They come in a pack of two nib sizes; 2mm and 4mm bullet tip.
MUCH BETTER THAN TORTILLIONS, MORE CONTROL IN BLENDING, MUCH SHARPER FINISH Alexis Moore (Miami, USA) on 25 Mar 2017
Blends polychromos very nicely Erica Mendes (Grândola, Portugal) on 9 May 2019
allows smoother blending for graphite
might work with other types of pencils Alexis Moore (Miami, USA) on 24 Jul 2017