Description This Monteverde black-plated steel Extra Fine nib unit is a complete all-in-one nib and feed unit which screws into most Monteverde fountain pens. Remove the converter or cartridge first, before swapping the nib unit. Other Monteverde replacement nib units are available in black or silver, in several nib sizes. We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.