Sheaffer Prelude Signature Silver plate with Engraved Snakeskin Pattern and 22K Gold Plate Trim Fountain Pen (9170-0) Filling Mechanism: Cartridge & converter - Proprietary Grip Diameter: 10.19 mm; Precious metal Finishes The pen fills either by Sheaffer's proprietary Classic Skrip ink cartridges or with a Sheaffer converter for bottled ink Nib Material: The nib is a bicolour nib, made completely of stainless steel with part of it tinted with gold plating There's a metal ring that the cap slides over which acts as a stopper for the cap and allows it to seat properly without damaging the nib Includes: One 9170 Fountain Pen with converter, 1 Blue Classic Sheaffer Skrip ink cartridge, 1 Black Classic Sheaffer Skrip ink cartridge Origin: United States; 3 years warranty card in a gift box