The Copic Multiliner SP pen is made with the highest quality materials. The Pen nib is encased in metal which ensures stability when used with rulers, templates and when drawing free hand. Once ink is dried it will not bleed or smear when drawn over with alcohol based markers. This pen has optimal reproduction properties and resistance to UV light is guaranteed. Available in nib sizes 0.03 - 0.7 and a Brush Nib. Copic are the only brand in the world to offer a nib as fine as 0.03.