Product # 1549 This is the SMA Female to Reverse Polarity TNC Male Adapter. It features a SMA Female adapter on one end, and Reverse Polarity TNC Male on the other. The adapter is made with a nickel-plated, metal construction for maximum signal strength and durability. The adapter will allow you to quickly change the gender or connector type on an already-terminated cable. The SMA Female to Reverse Polarity TNC 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.