Inktoneram Compatible Toner Cartridges Replacement for Canon 128 imageCLASS imageCLASS D550 MF4412 MF4420n MF4450 MF4550 MF4550d MF4570dn MF4580dn 3500B001AA (Black, 4-Pack) This package contains: 4 Inktoneram Replacement toner cartridges to replace Canon 128 ( 3500B001AA ) Toner cartridge. To replace Cartridges with part numbers : 3500B001AA Page Yield : 2,100 Pages / each cartridge at 5% coverage Printer Compatibility:Canon imageCLASS: D550 MF4412 MF4420n MF4450 MF4550 MF4550d MF4570dn MF4580dn Warranty: Our Compatible Inktoneram Replacement toner cartridges to replace Canon 128 cartridges are manufactured under strict ISO-9001 standards. They are excellent economical alternatives to the high-cost OEM Canon 128 toner cartridges. These cost-effective toner cartridges will provide high quality prints that meet OEM standards and are guaranteed against defect. Our compatible Replacement toner cartridges to replace Canon 128 cartridges come with a 90 day 100% money back guarantee.