Faber-Castell Pitt Graphite Crayons are made from graphite & clay & are great for sketching, shading & design work. You can use the full length of their octagonal 12mm x 120mm barrel to lay down highly lightfast, ageing-resistant colour, adding different effects depending on the pressure used & the degree of hardness you choose. You’ll find that Faber-Castell Pitt Graphite Crayons are long-lasting & very economical.