... barrel ,other parts made of copper4>.Good quality cartridge, pollution-free,writting smoothly5>.Pen tip :no feathering,no ... generous appearance, ideal for Advertising pen, promotion pen, gift pen, and ball pen, roller pen, banner pen etc.7>.Color &Logo Printing ... to produce the wonderful variety of pen, such as fountain pen,wodden pen,roller ball pen ,ballpoint pen ,etc.welcome browse our company ...