This Lexmark 20 colour ink cartridge features both smudge proof and fade resistant ink for improved printing quality. For use in Lexmark printers: Colour Jetprinter: P700 series, Z42, Z43, Z44, Z45/SE, Z51, Z52, Z53, Z54/SE, Z2700 series. All-in-one: F4270, P3120, P3150, X63, X70, X73, X80, X83, X84, X85, X125, X4250