Steffens Corp. pioneered the first commercially available non-Xerox cartridge for the (wide format) Xerox 8830 in 1999, and has since sold tens of thousands of compatible and OEM cartridges worldwide. Our extensive testing of each of our unique products assures consistent quality. We also sell genuine Xerox wide format toner, developer, parts, and supplies.Steffens brand cartridges (when applicable) contain longer lasting Xerox brand developer, and won&＃39;t compromise existing Xerox brand developer already installed in your machine.