ReFaXi 85mm Adhesive Mounting Disk for Car Dashboards Garmin GPS Dashboard Disc Replacement dashboard mount disk for your GPS unit Allows suction cup to be mounted onto the dashboard of your car SUV or boat's dashboard Easy adhesive plate, just peel and stick Compatibility with all Garmin / Tom Tom / Mio / Magellan windshield suction bracket diameter:3 inch 85 mm