Engineered for precision and longevity, the Pilot CON-70 Silver Piston Converter transforms your Namiki or Pilot fountain pen into a refillable writing instrument. This authentic push-button plunger-vac style converter features a sleek silver cap and measures approximately 3 inches, seamlessly integrating with compatible pen models. The reliable piston mechanism ensures consistent ink flow for uninterrupted creative expression. An essential accessory for fountain pen enthusiasts who demand quality performance and sustainability in their writing tools.