Features: Experience smooth and stable printing with this printhead for the HP91 series. A perfect replacement for your printer, ensuring natural colors and flawless nozzle performance. Crafted with polished nozzles and a jam-free design, these printheads guarantee a seamless printing process. Designed for professionals and individuals who value exceptional prints, ideal for graphic designers, photographers, and office users. Whether printing important documents, stunning photographs, or creative designs, these printheads deliver exceptional results every time. Upgrade your printing experience with these reliable and cost-effective printheads. Say goodbye to expensive replacements and enjoy high-quality prints without breaking the bank. Specifications: Product Model: Printhead For HP 91 Cartridge Color: Black Gray, Black Blue, Red Yellow, Red Blue (optional) Compatible Printer: For HP Designjet Z6100 42-inch (Q6651C) For HP Designjet Z6100 60-inch (Q6652C) For HP Designjet Z6100ps 42-inch (Q6653A) For HP Designjet Z6100ps 42-inch (Q6653C) For HP Designjet Z6100ps 60-inch (Q6654A) For HP Designjet Z6100ps 60-inch (Q6654C) Note: 1. When installing the nozzle, you must remove the air hole seal according to the instructions, but do not remove other seals at will, otherwise the ink will leak; 2. Each time a new nozzle is installed, the print head should generally be cleaned 3-5 times (please wash the print head at least once); 3. When a print head is out of ink or not installed, even if there is ink in the other print heads, the photo machine will not work; 4. When the new nozzle is turned off, it is best not to remove it before replacing the nozzle; 5. If you do not want to replace the nozzle, do not open the nozzle protection clip, otherwise the nozzle may no longer be used; 6. Do not reach into the printer or touch the nozzle when the printer is working; first check whether the ink of a certain color in the ink cartridge has run out. Package includes: 1 x Printhead Get professional-quality prints with this reliable and easy-to-install printhead. Enjoy vibrant colors and sharp details for all your printing needs.