Donatello Turtle Shell Action Button Mod takes the place of your current button and spacer. This mod is made of cast resin and hand painted with a Purple bandana. It comes with a clear button with the extension piece added to reach the contact switch properly. To install remove current button and spacer by taking off the nut on the inside of the lock down bar. Next take the tape off the turtle shell and put the button in it, line up the shell to the look you like and press it down. The tape will hold it lightly in place while you tighten the nut back on to the button.