Male to male Adapter.
SMB connectors with 50 ohm impedance are for applications from DC to 4 GHz. The SMB snap-on mechanism provides a fast and reliable connection for applications with high packing density.
BNC connectors are the most popular RF connectors, featuring a two stud bayonet coupling mechanism which is particularly useful for frequently coupled and uncoupled RF connector with frequencies up to 4 GHz.
F connector is a type of RF connector commonly used for cable and satellite television universally. It is a low cost connector with good performance at high frequencies.