Free ink technology is a perfect example of rotring's innovative force.
Our free ink writing instruments have clear advantages:

• The ink feed module gives a free yet controlled flow of ink from the reservoir onto the paper, eliminating the need for a conventional ink storage plug.
• This makes it possible to use 100% of the ink contents, with consistent line quality down to the very last drop.
• The ink level window shows the amount of ink left in the reservoir at any time.