X²-AIR 5.8 MK II Pair for HDZero VRX 4 (W/CORE Antennas)More gain and more convenience! This is the adaptation of the all mighty X AIR into a slick low profile face mount for the HDzero VRX4 module. Simply slide on the antennas on the modules rails and screw on the custom knurled SMA connectors. Improved 13dBic gain and massive combined beam width of 165deg, yield an amazing flight experience in the toughest conditions. Fill the remaining ports with a pair of OCP and you got the antenna full house. Package