4.7" Real Carbon Fiber Aluminum Short Antenna Polished Black Universal Screws Base Fit for most vehicles with screw-on radio antenna, Replaces for stock mast/whip antenna 4.7 inch high quality aluminium and real carbon fiber Functional and intended for AM/FM radio signal, do not compatible with satellite radio and GPS system This antenna cannot replace integrated-type antennas with GPS and/or Mobile phone.It is not designed to receive such signals. Package contains, 1 x Aluminum Carbon Antenna,4 x Different Size Stud bolts (Please select the correct one for your automobile), 2 x Rubber Rings.