iSaddle Adapter Plate Circular Adhesive Dash / Console Disc with 3M Adhesive Suction Cup Base For Car Dashboards Garmin TomTom GPS Smartphone Dashboard Disc(2Pcs,Diameter About 71mm) Brand New and High Quality Diameter : 7.1 CM (NO Include the Holder) Compatible with most windshield mounts Provides a glass like surface to mount your windshield mount No tools required