Our Canon Ink Cartridge replacements for the Canon PIXMA MG4120 cartridges are designed and manufactured by an ISO-9001 facility and match Genuine Canon name-brand cartridges at a fraction of the cost. These Canon PIXMA MG4120 Ink Cartridges will provide optimal print quality and page yields. We've been selling products like compatible Canon PIXMA MG4120 Printer Ink Cartridges for over 13 years and think you'll find great value in comparison to the Canon OEM PIXMA MG4120 supplies. For the Canon PIXMA MG4120 we sell higher yield versions of the ink cartridges. They are all the same size and will fit your printer perfectly, but the XL and XXL versions have more ink inside the cartridge so you can print more from the same cartridge. High yield cartridges are a great way to save even more money and to reduce the frequency of replacing your ink cartridge.