HUACAM HCM35N Wi-Fi Antenna Magnetic Stand Base RP SMA Connector with 3m Extension Cable 3M RP-SMA Wi-Fi Antenna Extension Cable with Magnetic Base RP-SMA (Reverse Polarity SMA) Male to Female extension cable Magnetic base can be attracted on iron products Ideal for extend the cable for installing the antenna to the ideal location This RP-SMA connector antenna base is great for antennas with RP-SMA connector. With magnetic base you can put your antennas on any metallic surface for better signal