This is a top quality toner cartridge comparable with the Lexmark 12A5745, guaranteed to be equal to or better than the OEM toner cartridge both for print quality, and life. These Lexmark compatible (not Lexmark brand) cartridges are manufactured from the finest materials, in an ISO-certified facility. These cartridges are used in the following machines: Lexmark 4069 Optra T, Lexmark Optra T610, Lexmark Optra T610N, Lexmark Optra T612, Lexmark Optra T612N, Lexmark Optra T612N, Lexmark Optra T612S, Lexmark Optra T614, Lexmark Optra T614N, Lexmark Optra T614NL, Lexmark Optra T616, Lexmark Optra T616N, Lexmark Optraimage 614S, Lexmark Optraimage T610sx, Unisys UDS-15, Unisys UDS-20, Unisys UDS-25, Unisys UDS-35