Remanufactured HP131A Magenta High Yield Toner Why "Super"-Reman; (#1) Top tier quality cores, (#2) Proprietary sterilization and automated manufacturing, (#3) Highest quality toner and ink, and We apply additional pre packaging tests to assure we send a working cartridge. We have a National 98% success rate, But if you have an issue, send us an email to service@123inkfast.com and we guarantee a high quality working cartridge or your money back. We will make sure you are happy, just give us the chance to do so. 1800 1-year warranty, The use of these print cartridges does not void your printers warranty 100% Performance Guarantee