STABILO CarbOthello is a pastel pencil: chalk pastel in the form of a wooden pencil. The lead is 4.4mm across and feels a lot like charcoal. You can blend it with your finger or with a paper blending stump.
The range has 60 colors.
The lead is partly water-soluble, so you can also spread the color with a wet brush. The outline of the drawn line stays visible when you do this. The colors also show up on dark paper.