Everything you need to make your fountain pen sing — nibs, sections, and converters. Replacement nibs let you upgrade or swap out a kit's stock nib for something that writes the way you want; sections give kitless and component-pen builders the front-end fittings they need; converters are the refillable alternative to ink cartridges that lets a fountain pen drink from any bottle of ink. We also stock the Schmidt Cartridge Rollerball System, a clever piece that converts most #5 fountain pen kits (Jr Statesman, Jr Retro, some Jr II, and others) into a rollerball that accepts standard fountain pen ink cartridges — same ink, smoother daily writing. Check compatibility notes before ordering; some kits need a tap to chase the threads.