I bought two sticks of Derwent XL Charcoal ( Ochre 01 and Sanguine 02 ). They are small and chubby so I don't know why they call them, XL! But, this is not important - what is important is that I am having lots of fun smudging grated charcoal powder all over my pencil sketches. I used some grated red pastel and black charcoal also in the mix of things. All drawings are on Fabriano A4.