Sailor Seiboku Fountain Pen Cartridge Pigment Ink, Kiwaguro (Ultra Black), 12 pack

 Sailor Pigment Fountain Pen inks are made with Sailor's proprietary super small nano particles. With these super small particles you will experience less clogging. Pigment ink also offers minimal bleeding as the ink remains on the surface of the paper and has minimal show through on the page. 

These inks write smoothly and are water resistant and permanent. We recommend cleaning your pen nib between writing sessions so the particles don't dry and clog the pen. 

Each box contains 12 disposable refill cartridges.