Now you can recycle HP11 cartridges by simply replacing the chip. The cartridge can be refilled many times with this Auto-Resettable chip!This Package comes with 10 Chips for each color, a total of 40 chips. HP-10 Black (C4844A) - 10 ChipsHP-11 Magenta (4837A) - 10 ChipsHP-11 Cyan (C4836A) - 10 ChipsHP-11 Yellow (C4838A) - 10 ChipsTo install it, remove the old chip with a blade. Place a small drop of super glue gel on the back of the chip and place it in the right position.