Blake Printing Supply &reg; 3 Big Black Compatible Ink Cartridges for PIXMA MG6620 Blake Printing Supply  3 Big Black Compatible Ink Cartridges for PIXMA MG6620 PIXMA MG5420, PIXMA MG5422, PIXMA MG5520, PIXMA MG5522, PIXMA MG6320, PIXMA MG6420, PIXMA MG7120, PIXMA MX722, PIXMA MX922, PIXMA iP7220, PIXMA iP8720, PIXMA MG6620, PIXMA MG7520, PIXMA iX682, PIXMA MG5620 3 Big Black Premium Blake Printing Supply brand of cartridges. Canon PGI-250BK, PGI-250BK XL, 251, 550, CLI-251, CLI-251XL, PGI-550, PGI-550XL