This compatible alternative to the original Canon GI-51PGBK can be used to refill the black reservoir in several quality Pixma inkjet printers. With 135ml of top-quality compatible black ink, this version of the 4529C001 is sure to give comparable results to the genuine Canon one.We really love the model of printing offered by the GI-51 series and other similar ranges, so being able to offer you an even cheaper black ink for your printer is very exciting to us. The compatible 4529C001 black ink refill bottles comes fully guaranteed for use in all of the Canon printers on this page, making its purchase completely risk free.