Diplomat Ink Cartridge Set Roller Ball Pen Brush sizes and types: Filbert:

Brush sizes and types: Filbert: 1

A unique feature of this model is the spring-loaded piston

preserving color vibrancy while enhancing movement and cell formation in poured artwork

or travel notes

Diplomat Ink Cartridge Set Roller Ball Pen Brush sizes and types: Filbert:The Diplomat Ink cartridge set includes black and blue ink cartridges, designed for smooth, consistent, and reliable writing. Made for Diplomat fountain pens, these cartridges ensure clean ink flow and rich colour output without blotting or skipping. Ideal for everyday writing, office use, and journaling, they are easy to install and provide a mess free refilling experience. A perfect choice for those who appreciate quality writing with classic ink