Conte a’ Paris Sketching Pencil - Carbon - Grade - 2H are an exceptional & extensive range of pencils, including both traditional & unique leads for maximum versatility in line, tone & intensity. Carbon Pencil - derived from traditional charcoal, but much stronger, this lead does not crumble or leave your hands dirty. Its delicate and highly detailed finish enables all types of perspectives to be drawn accurately. Lead diameter is 4 mm.