Green Toner Supply&trade; Remanufactured Ink Cartridge Replacement for HP 56 (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 450 Pages at 5% Coverage Green Toner Supply Remanufactured Ink Cartridge Replacement for HP56 works with the following machines: Officejet 4110 Series, Officejet 4215 Series, Officejet 5505, Officejet 5510 Series, Officejet 6110 Series, PSC 1110, PSC 1209, PSC 1210 Series, PSC 1311, PSC Green Toner Supply cartridges were professionally manufactured in an ISO 9002 factory