Description Herbin Rouge Caroubier fountain pen ink is a bright shade of red, and rinses out easily when cleaning your fountain pen. The container comes packaged with 6 standard short international size cartridges, and will fit most fountain pens that accept international cartridges. Herbin fountain pen ink was founded in Paris in 1700 and uses all natural dyes in their inks.Please note that these cartridges will not fit in pens that use proprietary cartridges.Having trouble deciding between colors? Use our Ink Comparison Tool to quickly and easily view different colors side by side.We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.