HP 936/937 ink cartridges work with: HP OfficeJet Pro 9120e, 9125e, 9130e, 9135e, 9720, 9730, HP OfficeJet Pro 9110b Printer, HP OfficeJet Pro 9120b All-in-One Printer, HP OfficeJet Pro 9130b All-in-One Printer (~1,250) pages, (~800) pages, (~800) pages, (~800) pages Tested Original HP ink cartridges printed more than 2X the pages, on average, than non-HP. Original HP Cartridges returned through HP Planet Partners are not sent to a landfill. You can recycle them for free in more than 60 countries and territories to become part of the circular economy.[2] Try HP Instant Ink - the hassle-free, money-saving ink subscription service. Ideal for professional-quality printing with vibrant color and bold blacks. What's in the box: 4 ink cartridges Ideal for professional-quality printing with vibrant color and bold blacks. Count on professional-quality documents. Original HP Ink Cartridges provide impressive reliability for dependable performance and durable results.[1] A convenient multi-pack