Having trouble attaching the swivel mount that came with your plug-and-play satellite radio to the Pro.Fit universal or vehicle-specific mount in your car? This adapter plate can help. It connects directly to your Pro.Fit mount, and works with car cradles of select satellite radios. Check the "Accessories" tab for a list of compatible radios we currently stock. If you have an older radio, give us a call at 1-888-955-6000 to see if it'll work with this adapter.