Add colorful heartfelt messages or decorative drawings to your projects with the Cricut Classic Pen Set. Five classic colors give you a nice variety for versatile use - perfect for greetings cards, invitations, banners, adornments, and more! Write and draw with your Cricut Maker, Cricut Explore One (requires Accessory Adapter), Cricut Explore, and Cricut Explore Air for beautiful results. These pens are water-based, acid-free, nontoxic, and permanent after dry.