BNC (Bayonet Neill-Concelman) connectors are RF connector types that are used for BNC cable that connect several television, radio and other frequency tools. BNC cables use small needles that are similar to needles of coaxial cables. The needle is surrounded by a cylindrical casing which is in turn surrounded by metal pieces. These cables connect by twisting and attaching in the cable. And they can be used to make reliable connections as they easily adapt to numerous outputs and inputs.