This is a high-quality Piston-style twist fountain pen converter from Pilot, Japan. Fits all current Pilot and Namiki pens. Four small metal agitators inside the barrel help break up air bubbles to keep a steady flow of ink. It replaces the ink cartridges and has a satisfyingly large capacity. Easily refillable, simply draw the ink up through the nib using the twist-action mechanism. Use this converter with bottled ink for pages of writing pleasure. Fits all current Pilot and Namiki pens.
