Tenna Tops 6 Pcs Yellow Smiley Happy Face Car Antenna Toppers, Antenna Balls, Rear View Mirror Danglers Official American Brand and the Original Happy Face Antenna Ball Made of soft durable foam (Not plastic). Hole Size 4.5mm Diameter Find Your Car, Truck or SUV in a crowded parking lot REALLY Fast! Shop Direct with us! (Seller Name: Tenna Tops - Coolballs - HappyBalls) to get our Authentic High Quality American Brands.