Sailor Professional Gear Silver Fountain Pen, Extra Fine, Black, 11-2037-120

[Type] Cartridge/converter dual-use / service cartridge included [Body size] Barrel diameter 18mm x barrel length 129mm (barrel length when writing 149mm) / 21.6g [Nib] 21K gold, large, two-tone finish [Cap/barrel/nib] PMMA resin [Feature 1] This writing feel is what you'd expect from professional gear [Feature 2] The center of gravity is optimally balanced by attaching the cap to the tail