F-INK Full Refillable Ink Cartridge Replacement for HP920 920XL Ink,Works with Officejet 6000 6000dwn 6500 6500A 7000 7500A E609a E609n E709a E709c E709q E709n E710n E809a E809b E910a Printer 1) Full Refillable Ink Cartridge Replacement For HP 920 920XL Ink, Full of Quality Ink, Include 4 colors ( 920XL Black, 920XL Cyan, 920XL Magenta, 920XL Yellow ) 2) With Permanent Chips. The first time installation, the chip will show ink level till it totally run out. After that, the chip will still be recognized by printer,but do not show ink level again. You can continue your printing without any bothers. JUST IGNORE THE MESSAGE " INK LOW ". 3) Compatible Printers: HP Officejet 6500A Officejet 6500 Officejet 6000 Officejet 7000 Officejet 7500 Officejet 7500A Officejet E709 Officejet E710 4) Can be Filled many many times . 1 set Refillable Ink Cartridge = N sets compatible ink cartridge , 90% cost saving , Reduce 90% pollution,protect the earth together. Very easy to refill ink