Features: 1Applicable Printer Model: The printhead is a replacement for HP Designjet 100 110 111 500 510 800 813 850 please check before ordering. 2Advantage: The printhead for HP Designjet has clear resolution strong layering good compatibility smooth printing. 3Ink Color: The package includes four printheads with ink color of Magenta(M) Black(K) Cyan(C) Yellow(Y) with bright clear color. 4Stable Reliable: Printhead for HP Designjet has stable performance high reliability suitable for replacing your broken parts. 5Durable Material: Premium ABS material lightweight compact non fading high hardness not easy to deformation. Specification: Item Type:PrintheadMaterial: ABSInkColor:Magenta(M)Black(K)Cyan(C)Yellow(Y) Package List: 4 xPrinthead Note: If the printer is not compatible there are generally the following reasons:1. The ink cartridge is not the original can not identify the print head need to replace the ink cartridge.2. If the metal contacts of the ink cartridge or printhead are dirty wipe the metal contacts of the ink cartridge pen holder with a clean soft cloth or an alcohol cotton ball to dry naturally then insert them back for testing.3. If it is still not recognized you can restore the printer to factory Settings reset the print head.4. Please note that the new type old type of this product will be sent romly make sure you will not mind before ordering. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin