• 3.5mm Microphone
• 3.5mm Headphones 
• CTIA Stereo Jack Y Cable 
• 1/8″ TS to RCA adapter for PTT

This is ideally used to connect your Flex FHM-3 Microphone to your Maestro C.

It will allow you to use PTT, the Hand Mic and Headphones.

It can also be used for other microphone interfacing such as Computer headsets.