Only Applicable Printer Model: ? Canon MAXIFY GX7020 Wireless MegaTank Small Office All-in-One Printer ?Canon MAXIFY GX7021 Wireless MegaTank Small Office All-in-One Printer ?MAXIFY GX6020 Wireless MegaTank Small Office All-in-One Printer ? Canon MAXIFY GX6021 Wireless MegaTank Small Office All-in-One Printer ? Canon MAXIFY GX3020 Wireless MegaTank All-in-One Color Printer ? Canon MAXIFY GX4020 Wireless MegaTank All-in-One Color Printer ? Canon MAXIFY GX5020 Wireless MegaTank All-in-One Color Printer Warm tips for compatible printer models to avoid wrong purchase? 1?The ink GI20 GI-20 is compatible for printers PIXMA G5020/G6020/G7020. 2?The ink GI21 GI-21 is compatible for printers PIXMA G3260 G2260 G1220 3: The ink GI26 GI-26 is compatible for printers MAXIFY GX3020/GX4020/GX5020/GX6020/GX6021/GX7020/GX7021 4?The ink GI23 GI-23 is compatible for printers MAXIFY G620 Please purchase the correct toner according to your printers How to refill? 1--- Please find the ink bottle to replenish ink first, the color of the top cover of the ink bottle is consistent with that of the ink. 2---Please directly open the bottle cap and inject ink without squeezing the bottle by hand. It stops automatically when the ink is full.