Remanufactured cartridges like our alternative to the original Xerox 006R01513 use many of the parts of the original to reduce environmental impact, while maintaining print quality. We are so confident in our refilled version of the Xerox 6R01513 that this black toner cartridge comes with a 100% satisfaction guarantee and free shipping (to UK addresses).As our manufacturers have stuck as closely to the specifications of the original Xerox 006R01513, you can expect the same wonderful 26,000 page yield and compatibility with just as many printers (even the Xerox WorkCentre 7835).