1Compatible Models: For IP3600 IP3680 MP540 MP560 MP558 MP568 MP620 MX860 MX870 printers. 2High Performance: The upgraded QY6 0073 print head chip can identify ink cartridges faster, the print head inkjets smoothly, protects the printer, prints clearly, with bright colors, making your life more colorful. 3Easy To Install: The kit contains 1 printhead. It can be installed and used without any accessories or disassembly, without damaging the original machine. 4Material: The QY6 0073 print head housing is made of ABS, which is more wear resistant and has been tested many times to ensure the print head performance and make your printer run smoothly. There may be a small amount of ink remaining on the product, which is normal and does not affect the use of the product. 5Note: Be careful when installing the nozzle, be sure to cut off the power before putting it away. The print head test is carried out before leaving the factory to ensure the performance of each set of accessories.