4 Types RF Adapter SMA Adapter to SMB Connector RF Converter Set for DAB Car Radio Antenna Features: Made of nickel plated brass, which has good connectivity. Including 4 types of adapters: SMB female to SMA male, SMB female to SMB female, SMA male to SMB male, SMA female to SMB male. Durable and corrosion resistant, it can be plugged for 1000 times. Perfect interface matching, stable and reliable performance. Wide application: suitable for antennas, DAB antenna adapters, coaxial cables, radio scanners, radio transceivers, CB radios, hand-held and amateur radios. Specification: Material: nickel plated brass Weight: Approx.18g/ 0.63oz Impedance: 50Ω Durability: 1000 times Type: SMB female to SMA male, SMB female to SMB female, SMA male to SMB male, SMA female to SMB male Package List: 4 * Adapter Note: Please allow slight error due to manual measurement. Thanks for your understanding.