DESCRIPTION: Brass fountain pen with a classic design, the portable version creates a new way to carry it with you. The YSTUDIO brass fountain pen is your best EDC pen choice. This pen is made of solid brass and comes with a black maple pen case. If you are looking for a desktop fountain pen or another color, YSTUDIO also provides a variety of unique fountain pens. SPECIFICATIONS: Material: Brass, Copper Dimensions: 10.5 x 12 x 138 mm Weight: 46 g Case: 115 x 185 x 50 mm Refills: One ink converter included (international standard cartridge type) USE AND CARE: The color of brass can be altered by different users and various environments, but this is also its unique characteristic. Oxide is harmless. It would restore its original shine by cleaning with brass polish. Without any surface treatment, we hope each brass fountain pen will retain its individual characteristics through constant use. Experience and appreciate this unique copper beauty. INK RECOMMENDATION To ensure the best writing experience, the manufacturer of our fountain pen nibs, Germany Schmidt, recommends using ink of moderate thickness. For example, inks from Pelikan, Waterman, Cross, etc.