This is a smoked blue part replacement for your MP20 Masterpiece Wheeljack's head. This piece replaces the silver colored ears with a translucent blue plastic that is reactant to UV light. When exposed to UV light the ears will glow a bright baby blue color.
This is for the fully painted plastic piece. To install all you need to do is remove the screw on the back of your figures head and swap out the piece.
Colors may vary slightly, as each batch of these is hand made at different times. This is for a single piece only, figure is not included. May still have remnants of flashing from the cast process but are simple and easy to brush off.