Features: Material: Aluminum + Carbon Fibre Length: 12cm (4.7") Bottom width: 1.5cm Include: adapters in 4 common sizes Easy installtion,No any modification. It also fit Most Vehicles With Screw-On Type Antenna Base. Attention: This Item is For AM/FM radio only. Does NOT compatible with satellite radio and/or GPS system. Please Do Not Buy if Your Vehicle Does Not Have Screw In Type Antenna Included: 1 x Carbon fiber antenna 4 x Different Size Stud bolts 2 x Plastic Rings