Desk Fountain Pen-Copper The body of the YStudio desk fountain pen is made of copper with a solid pen holder made of brass. Both pieces were turned from a single piece of copper and brass. The color of copper would be changed by different users and various environments yet this is also its unique feature. The oxide is harmless. It would restore its original luster by wiping with Brass Polish. Without any surface treatment, we hope each product can maintain its individual marks by the constant use of the owner. The pen writes steady and smooth. Fountain nib is from Germany Schmidt and it comes with a Schmidt converter inside. It's a true eye-catcher and a great gift suggestion. This also comes with an exquisite paper box package. ＊Please be noticed this item is unportable, it doesn't have a cap. The solid brass holder is the cap. You put your fountain pen in it on your desk when not using.If you are looking for a portable fountain pen, please check out the portable version. Material: Pen: Copper, Pen Holder: Brass Dimension: 10.5 x 12 x 146 mm Weight: Pen: 41g, Pen Holder 350g Box: 115 x 185 x 50 mm Refills: A converter is included (International Standard Cartridge Type) INK RECOMMENDATION In order to have the best writing experience, the manufacturer of our fountain pen nibs, Germany Schmidt, recommends customers to use ink which has a moderate thickness. For example, the ink from Pelikan, Waterman, Cross, etc.