Monteverde USA® is proud to introduce the world's latest leading European ink treatment formula which drastically improves ink-flow quality. ITF™ Ink Treatment Formula that: - Drastically improves ink-flow quality - Extends cap-off time - Lubricates and protects the ink feeding systems from corrosion and clogging - Improves in drying time on paper Free Flow Monteverde USA® Inks in a variety of vibrant colors, provide an unprecedented writing experience. Monteverde USA® refills are not manufactured, licensed or endorsed by the pen manufacture referred to above. The trademarks of the pen manufacture are identified only for the purpose of providing refill compatibility information.