The Pilot Parallel Pen is a remarkable and durable tool that offers crisp edges, sharp hairlines and a totally reliable, smooth flow of ink for beginners and seasoned lettering artists. In a typical dip or cartridge pen, ink travels through one or more slits in the nib and feeds across the writing edge. Skipping (non-delivery of the ink) can occur, particularly in larger pens. The parallel pen has a totally different construction. Ink flows between two layers of metal lying on top of each other,