Print.Save.Repeat. Lexmark 521 Remanufactured Toner Cartridge for MS710, MS711, MS810, MS811, MS812 [6,000 Pages] Made and supported in the USA by Print.Save.Repeat. (Ranked #346 on the Inc. 500 Fastest-Growing Private Companies List) Guaranteed to meet or exceed all OEM standards for page yield and print quality. Page Yield Rating: 6,000 pages @ 5% toner coverage Compatible Lexmark Printers: MS710dn, MS710n, MS711dn, MS810de, MS810dn, MS810dtn, MS810n, MS811dn, MS811dtn, MS811n, MS812de, MS812dn, MS812dtn Compatible Lexmark Part #s: 521, 52D1000