Get beautiful results with this Cricut Explore pen set. With a range of sizes and stylesincluding glitter gel, marker and calligraphy tipsyou get the perfect drawing and writing tool for every project. And in basic black, you cant go wrong! Give an extra special finish to greeting cards, invitations, journals, scrapbooks, labels, decals and more. These pens are water-based, acid-free, nontoxic, and permanent after drying for ease of use and peace of mind. For use with Cricut Explore machines (may require Pen Adapter).