INKUTEN &copy; 4 HP OfficeJet Pro 8500A Plus Ink Cartridges Combo Pack (Compatible) Cartridges are manufactured in an internationally certified ISO 9002 factory and come with a 100% 365 day money back guarantee and technical support. 100% satisfaction or your money back INKUTEN is the exclusive seller of toner refill kits, Inkjet Cartridges, Toner Cartridges, and Drum Units INKUTEN offers free technical support for any questions you may have 2,200 Page Yield for Black & 1,400 Page Yield for Color Page Yield