About this item Replaces original Cricut stock pen holder to allow use of other most popular markers and pens in your (Explore Air/Air 2/Air 3/Maker/Maker 3) cutting machine for more versatility,(Not Work With Explore One and joy machine) Super simple, super easy to use pen adapters for your air/air2/air3 and maker/maker 3, Depth calibration no needed,Each adapter holds the pen in the exact center ensuring that draw and cut operations line up perfectly Product includes 20 Pcs the most popular pens/markers adapter,you would have so many more pen/marker options for your cricut machine, you now have so many more options for writing and coloring on your cut designs Easily identify each of your adapters by engraved pen abbreviation Or the different color codes, Our Adapters are made with High Quality ABS Plastic and every adapter inspected befor shipping, available to maintain top quality