Keep your pen cartridges organized and ready to use with this 3D-printed holder and purger. Designed with four slots to securely hold 3ml cartridges, it keeps them neatly stored and easily accessible. The integrated purging feature allows you to quickly remove any air bubbles from the cartridges, ensuring accurate and consistent dosing. Compact and durable, this holder is a must-have accessory for pen users, providing convenience and peace of mind.
