PILOT Custom Heritage 91 Fountain Pen - Black/SilverFeaturing a sophisticated, elegant design, the PILOT Custom Heritage 91 Fountain Pen offers an ultra smooth writing experience right out of the box and comes in a wide range of nib sizes. Its lightweight body helps to prevent fatigue even during longer writing sessions. Resin body 14k gold nib Can be used with PILOT Con 40 turn piston cartridge converter (included) or Con 70 push button cartridge converter Compatible with PILOT proprietary cartridge