The Diplomat Aero fountain pen features a Zeppelin-inspired flame-torched steel body with groove-like depressions on the barrel and cap. It has a satisfying soft sliding click cap that posts securely onto the barrel when writing. It features a smooth writing #6 JoWo nib in stainless steel, a matte gunmetal grip and trim, and fills via standard international cartridge/converter (both are included). Forged in fire, designed for innovation. Each pen is individually set under a blowtorch, ensuring a unique style on every fine writing instrument. Clear lacquer is applied during the finishing touches to offer a stunning sheen on the body of each pen. The hues and textures are truly original, and any pen lover is sure to appreciate the craftsmanship. Note: The converter you receive may vary from what is pictured here. Click here to shop all compatible short standard international ink cartridges.