Laser Tek Services&reg; 4Pk Refill Kit for Xerox 7500 Kit comes with 4 Bottles, Easy Instructions, Funnel Cap, 4 reset chips, and Latex Gloves if needed Ships Directly from our warehouse within 1 business day! Each Bottle is good for at least the same page yield as a new cartridge, usually a bit more. Great phone support with Laser Tek Services, for all your troubleshooting needs! Save big each time you refill and GO GREEN!!!