Muji Aluminum Round Shaft Fountain Pen Black 13.71cm 1 Fine Ink Cartridge

The cartridge is compatible as a replacement core for aluminum round-shaft fountain pens, containing two black cartridges (15-139040). Size: When cap is attached: Total length: 13.7cm ・Thickness: Diameter 1cm ・Weight: 20g Color: Black Material: Body: Cap: Aluminum ・Clip: Iron ・Upper body: Brass ・Nib: Iron Ink type: Water-based (dye type) Country of origin: Body: Japan ・Nib: Germany