Package contains 4 Black Remanufactured Cartridges;Works with: with Lexmark E120 E120N E-120 12035SA 12015SA;Page Yield: 2,000@ 5% page coverage;Product Comes with a 1 year 100% Satisfaction Guarantee! Laser Tek Services????offers free technical support for any questions you may have.;Manufactured by ISO and STMC certified facility. 100% Guarantee on all of our products!| The Use of Laser Tek Services????Remanufactured products will not void your printers warranty.