The Factory's industrial, raw aluminum body is a modern classic. The Diplomat Aero collection is crafted from aircraft grade aluminum and made in Germany. The balanced form fitting design gives the writer an assurance of quality and pleasant writing experience. All Diplomat ballpoint pens use standard Parker Style refills. The pens come with a Schmidt EasyFlow refill in black medium, and we recommend using the Monteverde brand. Excellent gift box make this pen a stand out gift of exceptional quality.  International Guarantee.