This is the BNC Male to BNC Female T-adapter. It features a male BNC connector on one side. And two BNC female connectors on the other side. The adapter is made with a nickel-plated, metal construction for maximum signal strength and durability. The adapter is typically used for connecting between an internal token/ring network. You can send and receive the signal between your network into your device, then back out into the network. It is important to note, however, that any unused ports should be closed off using a terminator. The BNC Male to BNC Female T-adapter is a quick and easy solution for your cabling projects.