HP C8766EE No 343 Tri-Colour Inkjet Cartridge. To fit Deskjet 6540/5740/6840/6540D/9800, Photosmart 325/375/2610/2710/8150/8153/8450/ Officejet 7410/6210. Page life - 260. A product which has been primarily designed in order to compliment your appliance, this superb HP 343 3-colour ink cartridge delivers vibrant, bold images and text documents and ensures professional, eye catching results from the very first page to the last. There is no denying their expertise in this field, but the fact that Hewlett Packard has developed over 100 new inks, including this one, in the last twenty years speaks volumes.