Diplomat writing instruments have been around since 1922. The Aero collection has been a very popular line crafted in aluminum. The Aero flame is crafted from solid stainless steel. Can you imagine the weight of this pen just reading this? The Aero Flame comes with a stainless steel nib in Extra Fine, Fine Medium and Broad. Filling with cartridge or converter. The exclusive slip cap closure system is a pleasant closure with a firm and solid feel. It comes with an attractive box and packaging.