Office World Compatible Ink Cartridge Replacement for PGI-270XL CLI-271XL 4 Black,Compatible with PIXMA MG6820 MG6821 MG6822 MG5720 MG5722 MG5721 MG7720 TS5020 TS6020 Less expensive,same Great quality. What's in the Box: PGI-270xl Ink Cartridge(4 Large Black) 4 Pack Compatibility: MG6820 MG6821 MG6822 MG5720 MG5722 MG5721 MG7720 TS5020 TS6020 Approximate page yield:~500 pages per black 5% coverage. Customer Service:Please find your order and click 'Contact Seller',send us Email.