The Rugged Radios OFFROAD and STX cable adapters convert an STX-series headset to a different connection type — stereo or mono — so you can plug your STX Ultimate or AlphaBass headset into a friend's vehicle running different comm wiring. They also make a handy backup replacement cable for STX headsets.CompatibilityCompatibility is specific to Rugged STX Ultimate and AlphaBass headsets. These adapters do not fit Rugged's standard (non-STX) headset lines.Specifications Converts an STX headset connection for stereo or mono systems Fits STX Ultimate and AlphaBass headsets only Genuine Rugged Radios adapter cable Sold individually — one adapter per order.Frequently Asked QuestionsWhich headsets do the OFFROAD and STX cable adapters fit?Rugged STX Ultimate and AlphaBass headsets only — they do not fit Rugged's standard headset lines.What do these adapters convert?They adapt your STX headset to a stereo or mono connection, so it can plug into a vehicle wired with a different intercom or radio connection.Are they sold as a pair?No. Each adapter is sold individually.