This Canon PFI-300 grey ink cartridge is the only cartridge of this colour available for your printer, and comes with a very fair asking price. Compatible with the imagePROGRAF PRO-300 only, the genuine Canon 4200C001 has been designed for those who print high-end design work, either for themselves or others. Containing a full 14ml of top-quality Canon ink, the PFI-300GY Grey ink cartridge is a natural choice for those that need the very best from their inkjet printer. The Canon 4200C001 comes fully guaranteed by the manufacturer, and we are sure that you will be pleased with your purchase.