Faber-Castell Super-Polymer Fine Line Leads are an essential piece of kit for thousands of artists all over the world. They're extremely tough and especially smooth to write or draw with. They'll fit all standard mechanical pencils, and come in eight grades of hardness and four line widths, so whatever effect you're looking to achieve, there'll be one to fit the bill. They produce intense black lines and the cleverly designered container makes refilling simple and tidy. Each set of Faber-Castell Super Polymer Fine Line Leads contains 12 Intense Black leads.