The PG-545/CL-546 Black and Colour Combo Pack comes complete with one PG-545 black ink cartridge and one CL-546 cartridge that contains Cyan, Magenta and Yellow ink together in the same cartridge. Both of these cartridges hold 8ml of ink and use Canon’s FINE technology to deliver ink evenly and with great precision. FINE stands for Full Photolithographic Inkjet Nozzle Engineering and is a proprietary system from Canon that places a mechanical printhead on the cartridge rather than in the printer.