This is the BNC Female to SMA Male adapter. It features a BNC Female connector on one side. And an SMA Male connector on the other side. The adapter is made with a nickel-plated, metal construction for maximum signal strength and durability. The adapter will allow you to change a BNC cable into a SMA cable. The BNC Female to SMA Male adapter is a quick and easy solution for your cabling projects. For more information on our products, please contact our customer service department at 888-519-9505. For all your cable and connector needs, choose Show Me Cables.