Specifications of SMA Coupler Barrel Adapter Kit 3 pack of SMA barrel connector kit 1: SMA Female to SMA Female barrel connector 2: SMA Female to RP-SMA Female barrel connector 3: RP-SMA Female to RP-SMA Female barrel connector Materials: Brass Temp range: -40 +60 Mounting Type: Free hanging Working Voltage: 335V max Frequency Range: 0~1 GHz Insul..