The MC-20 Maintenace Cartridge is a replacement for the Maintenance Cartridge that came with your PRO-1000 Professional Inkjet Printer.
The MC-G02 Maintenance Cartridge is a replacement for the Maintenance Cartridge installed in select Canon PIXMA MegaTank printers. Designed to be easily replaceable by users.
MC-G06 Maintenance Cartridge is a replacement for the Maintenance Cartridge installed in select Canon PIXMA printers. The MC-G06 is designed to be easily replaceable by users, and compatible with PIXMA printers TR7820 and TS7720.