In addition to it being scaled (to the best of our ability) so it can be held by Thrust, Tankor... our favorite feature of this part is that it's "vacuum metalized" w/ a similar look to the Transmetal seen in Beast Wars.  In fact, every key has been "sputtered" in actual chrome (not aluminum like TFs) & given a yellow clear coat.  We chose chrome, because unlike aluminum it's a much darker and splotchy metal look adding to the ancient aura of this Autobot Artifact.