LIKART 6 Pack Pen Adapters Likart pen adapter set compatibles with Sharpie pens only work for: ✔Maker 3 ✔Maker ✔Explore 3 ✔Explore Air 2 ✔Explore Air **NOTE: THESE ADAPTERS WILL NOT WORK FOR EXPLORE ONE** Each of pen adapters by inscribed abbreviations and color-coded for effortless identification. Pink "U" Pen Adapter The pink "U" adapter: For Sharpie Ultra Fine Point (including: classic, electro pop, color burst). Blue "A" Pen Adapter The blue "A" adapter: For Sharpie Art Pen (including: stylo and art). Green "F" Pen Adapter The green "F" adapter: For Sharpie Fine Point (including: classic, metallic, extreme, neon, color burst). Make Your Design More Amazing Likart pen adapter set is easy to install and remove. You can easily identify each of your adapters by engraved pen/marker abbreviation and color. No need for depth calibration as adapters perfectly align each pen/marker for precise height and point center. They will make the drawings/writings as precise as the original holder.If you have Likart pen adapter set, you would have so many more pen/marker options for your cut machine, you now have so many more options for writing and coloring on your cut designs. The pen adapter is sturdy and useful, they will save you lots of money on pens.