The very first fountain pens were mainly eyedropper filled fountain pens. It remains as a highly reliable style (no sac to integrate, no mechanism to fail, or replacement cartridge needed) and is highly efficient since it maximizes ink reservoir capacity by utilizing the entire barrel. Each Noodler's dropper bottle comes with an eye dropper cap that you can use to fill your pens with.
This fountain pens set comes with a modern eyedropper fountain pen. It has an anodized black stainless steel nib, etched plastic feed with numerous internal fins to better regulate ink flow, and a fully visible ink chamber. Just use the eyedropper to fill the fountain pen barrel with ink and you are ready to write! No cartridge or converter needed.