LARSEN's GPSNMO08 low profile 26 dB black 5 V GPS antenna. Requires ground plane. SMB connector. This listing is for Each. RF Connectors SMB Male Mobile Antenna Mounting Type NMO Amplifier Gain 26 dB Item Width 2.9 in Antenna Material Plastic Item Length 2.9 in Color Black Frequency 1575.42 MHz Qty/ Uom 1 Each Item Height 1.3 in