Material:gold plated brass with Great connectivity; Impedance：50 ohm Application: For FPV antennas WI-FI Router HT radio MMDVM unit Video VTX IP camera ham radio digital amplifier SDR SMA male to SMA female adapter RP-SMA male to RP-SMA female adapter RP-SMA male to SMA female adapter SMA male to RP-SMA female adapter SMA female to RP-SMA female adapter SMA female to SMA female adapter RP-SMA female to RP-SMA female adapter SMA female to SMA female adapter SMA male to SMA female right angle adapter SMA male to RP-SMA female right angle adapter RP- SMA male to RP-SMA female right angle adapter SMA female to RP-SMA male right angle adapter SMA male to SMA male right angle adapter RP-SMA male to 2 X SMA female adapter Kind reminder: RP connector can not match regular connector , RP means Reverse polarity. SMA type are with 4 kinds type usually , for example : SMA male is inside screw with plug center, SMA female is outside screw with hole center, RP SMA male is inside screw with hole center, RP SMA female is outside screw with plug center.