A Coaxial Adapter, RP-TNC Female to N Female Connector is an adapter used to connect two pieces of coaxial cable. It has an RP-TNC female connector on one end and an N female connector on the other. This type of adapter is commonly used to bridge two different types of coaxial cables together. The adapter is typically used when connecting two pieces of equipment that use different types of coaxial cables, such as a router and a modem. This adapter allows for the two devices to be connected without having to replace the cables.