Green Toner Supply &trade; Compatible Ink Cartridge Replacement for HP 950XL (Black) Green Toner Supply offers LIFETIME WARRANTY against manufacture defects Green Toner Supply offers 2 Years Money Back Guarantee on Manufacture Defects Print Yield: Up to 2,300 Pages at a 5% Coverage Green Toner Supply Compatible Ink Cartridge Replacement Ink Cartridge for HP950XL works with the following machines: HP Officejet 8100, HP Officejet 8600, HP Officejet 8600 Plus, HP Officejet 8600 Premium Green Toner Supply cartridges were professionally manufactured in an ISO 9002 factory