Amazon.com: Arthur Imaging Compatible Ink Cartridge Replacement for Canon Pgi-250Xl CLI-251XL for Use with Pixma MX922 MG5520 (6 Large Black, 4 Small Black, 4 Cyan, 4 Yellow, 4 Magenta, 22-Pack) : Office Products
How to refill PGI550/CLI551 - PIXMA MG 5450/5550/5650/6350/6450/6650/7150 - YouTube