【Compatible Models】X4E75A MOH50A Printhead Compatible for HP Smart TanK 508 510 511 516 518 519 531 536 538 539 618 525 528 582 585 588 589 printers. 【High Capacity】BK: 18g; C/M/Y: 6g each. 【High Performance】Our printheads have smooth ink discharge, good compatibility, strong layering, and high-speed printing. At the same time, they maintain high-resolution and high-density printing quality. 【High Quality】Each of our products will be machine tested before leaving the factory to ensure quality, so there is no need to worry about its imperfect functions. It is a perfect replacement for your worn or faulty print head, ensuring consistent and perfect printing. 【Easy to install】Our products are easy to install, without complicated debugging and disassembly. Just replace it and your printer will work again.