These backbox chrome trim kits fit most games.  The trim kit consists of chrome banding with adhesive backing to finish where the factory left off.  If you want to dress up an older  Williams game you would need the 4 piece set.  If you have a stern with the wooden backbox , then just the speaker panel trim is required.  If you have the newer sterns with the metal backbox, then the 3 piece set would work. The shiny new chrome trim really enhances and dresses up your backbox.  Easy to install and pre-cut to fit perfectly on your pinball machine.