If you do a lot of printing, you know that printer companies make their money on the printer ink, not the actual machine. That cost can add up fast, especially in a large office. But it's also important to use the genuine OEM toner formula in your machine, to get the clearest line detail and truest imaging. Now you don't have to sacrifice either. Save money and get genuine OEM toner with Professor Color printer Re-Coded OEM cartridges. Instead of compatible printer ink, these repackaged cartridges for printers are actual OEM cartridges originally manufactured for another sales channel and filled with genuine OEM toner. We personally inspect each and every toner to verify it is new, unused, and undamaged. Then we change the code, to make it compatible with your printer, and repack it in a plain, easy-to-open box. It's the same reliable performance, text quality, and professional imaging you expect from OEM, but without the high cost. These OEM printer cartridges are for use in a Xerox Altalink C8130, C8135, C8145, C8155, and C8170.