Similar to our small Sketch Pencil, but with added features. Can be easily switched out with the supplied pen refill to turn it into a mini-pen. Takes 5.6 mm leads. Color pencil leads that can write on glass, metal, you name it, are also available on our site. One pack of color leads includes yellow, red, and green leads. Additional graphite leads are also available.  Graphite leads come in a pack of three.