Letter It™ Clear Medium Pens contain a specially formulated ink that works with Embossing and Perfect Pearl Powders. The ink stays wet on paper long enough to allow working time to create your own sentiments and designs. Then simply add your choice of powder and heat using the Ranger Heat It Craft Tool or Embossing Tool to melt or set powder. Use Letter It Medium Pens for hand lettering, doodling, outlining, stenciling, and more! Available in sets of two: Bullet and Brush tips.