Private Reserve Ink Long Cartridges 6-pack Spearmint

These Private Reserve Ink Long Cartridges 6-pack Spearmint are the long standard or universal or international fountain pen ink cartridges.  Compatible with most pens that use the shorter version provided the pen body is long enough to accommodate these cartridges. Many pens are proprietary and use only their own specific brand of cartridge; these will NOT work in those pens.  If you have questions or concerns or you are not sure if these are compatible with you pen, please contact us before ordering and we will be happy to help you out.