Sierra cable set to connect a SWR meter to test standing wave ratio on an OEM antenna.
Can also be used as a 36 inch PL259 extension. These cables have PL259 connectors on the end of each cable to allow for connection into each side of a SWR meter and also motorola connectors on the opposite ends to allow for the connection of AM/FM and CB antenna coax found on most OEM audio systems.

Product ID SIE SWR12