2 Pack Compatible Ink Cartridge Replacement for Canon PGI-225 (2 Black) &copy; ND Brand Dinsink The cartridge is transparent. It is easy to view how much ink left to prevent from lack of ink to cause air bubbles or how much ink filled in to avoid overfill for easy operation. The prefilled cartridges can be used as OEM ink cartridges for an easy using. 2 Big Black Fast Same Day Shipping!