4" 10cm Black Stubby Car Antenna Aerial for Scion xB xD Durable,Good Fit Scion xB xD 2008-2011 ^Direct Bolt-on, Easy to Install ^100% Waterproof and Shock Resistant ^It comes with M5(diameter 5mm) and M6(diameter 6mm) of screws, if your car is one of the two size, it will fit. ^Material: Matt back not carbon fiber & definitely look a lot better