Adapter, SMA to SMA-RP
Adapter with female SMA threads on one end and male SMA threads on the other end and holes for pins (no pins) in both ends.

The female (internal threads) connector is reverse-polarity SMA .  The male (external threads) side is standard-polarity SMA.

Can be used to connect a FLARM-Ant-ADSB-Dipole-SMA antenna to a PowerFLARM Portable's ADS-B port.

Length: 17 mm (0.67 inches)

Approximate outer diameter of male threads: 6 mm