ITEM NAME:1Pc M Type Female SL16-K/SMA-K to SO-239 PL259 Female RF Adapter ConnectorA.AU.Connector B: SMA Female. Connector A: UHF Female. Size: 3cm 1.5cm. Impedance: 50 ohm. Application for Antennas, Wireless LAN Devices, Coaxial cable, Wi-Fi Radios External Antenna and so on.