If you love to sew, these pens change everything! shrink hours of work to minutes as your Cricut makers machine draws pattern instructions and cuts each piece out in one step. No more tracing on paper or painful straight pins. Just choose a pattern in design space (or upload your own), load your mat and a fabric Pen, and watch with awe as Cricut maker draws the pattern instructions for you. Use with the Cricut maker machine only.