HP OfficeJet Pro 7740 Wide Format ink Cartridge 955XL HP955XL Black or Colour Tonerink brand955XL Black ink cartridge Yield: 2000 Pages955XL Colour (Cyan or Magenta or Yellow) ink cartridge Yield: 1600 PagesFull Set ( 955XL BK+C+M+Y) = 4 XL Extra Large 955XL ink cartridge = $119.95For use ..