This Brass Mechanical Pencil from Ystudio has a beautifully designed solid brass body, that includes a copper top to propel the 0.7 mm thick lead when pushed. The mechanical pencil will sit comfortably in your hand and has great grip so your fingers wont slip when you are drawing or writing. Because this mechanical pencil is made of brass and due to the contact with oxygen and grease from your skin, the brass will oxidise over time to produce a beautiful and unique patina. This pencil is part of a larger range of quality writing tools from Ystudio that are all made from brass. - Brand: Ystudio - Made from brass - 0.7 mm thick lead - Creates a unique patina from oxidation of the Brass