Feature:1. For antennas, DAB antenna adapters, coaxial cables, radio scanners, radio transceivers, CB radio handheld and amateur radio.2. The connecting part is made of nickel-plated brass, anti-corrosion.3. Can be inserted and removed 1000 times, durable for long term use.4. The interface is perfectly matched, the connection is stable, and the signal is stable.5. Small size, low power consumption, strong stability.Spec:Condition: 100% Brand NewMain material: Nickel Plated BrassLife expectancy: 1000 timesImpedance: 50 ohmsConnector type: F male to SMA male, F female to SMA female, F male to SMA female, F female to SMA maleSize: 6 * 5 * 1cm / 2.4 * 2.0 * 0.4inWeight: Approx. 33g / 1.2ozPackage list:4 * F to SMA Adapter