1Made of high quality nickel plated brass, which has good connectivity. 2Including 4 types of adapters: SMB female to SMA male, SMB female to SMB female, SMA male to SMB male, SMA female to SMB male. 3Durable and corrosion resistant, it can be plugged for 1000 times. 4Perfect interface matching, stable and reliable performance. 5Wide application: suitable for antennas, DAB antenna adapters, coaxial cables, radio scanners, radio transceivers, CB radios, hand-held and amateur radios. Features:Made of high quality 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 brassWeight: Approx.18g/ 0.63ozImpedance: 50Durability: 1000 timesType: SMB female to SMA male, SMB female to SMB female, SMA male to SMB male, SMA female to SMB malePackage List:4 * AdapterNote:Please allow slight error due to manual measurement. Thanks for your understanding.",