Compatible Canon PIXMA MG6420 inkjet cartridges from ezink Products are Guaranteed to meet or exceed the print quality of the OEM (Original Equipment Manufacturer) Canon PIXMA MG6420 inkjet cartridges. Purchasing our compatible Canon PGI-250XL and CLI-251XL ink cartridges is an excellent way to save money without sacrificing quality. Our compatible Canon PGI-250XL and CLI-251XL ink cartridges have a 'Lifetime Guarantee'. The use of our compatible ink for the Canon PIXMA MG6420 does not void your printer's warranty. We also carry OEM inkjet cartridges for your Canon PIXMA MG6420 printer.