Monteverde’s® Invincia™ collection continues to surprise with an explosion of hot colors to create the “Color Fusion” series. The three layers of durable high gloss lacquer produce a rich and deep brilliance for each color that is perfectly enhanced with the sophisticated black trim. We have added the option of the new technology of Ink-Ball to this series, which allows the use of fountain pen ink with the convenience of a rollerball point. The ink-ball and fountain pens accept both ink cartridges and ink converter.Fountain pen and ink-ball fills with Monteverde® standard international G3 ink cartridges or piston ink converter (included).The flexible stainless steel nib is available in fine, medium, broad and stub sizes. Ballpoint accepts P1 and P4 refills and the capped rollerball accepts the G2 and W2 refills.