Material: Vintage Green Hatch Celluloid . Nib Size: #5 nib Extra fine, Fine, Medium, and Broad widths. Cartridge/converter ink system. Weight: 25 grams Length: 149 mm. Length (posted): 165 mm. Cap Diameter 13.5 mm. Body Diameter: 11 mm. Price includes Steel nib and ink convertor. Please e-mail for 18kt Gold nib upgrade options.