A 3.5mm 2-pole jack plug for use with Sennheiser, Trantec and Sony radio microphone systems that have an external screw thread locking ring.

This connector has been designed for use typically with lavalier microphones with a cable diameter up to to 2.5mm.

Supplied as a connector (for microphone circuit connection on Trantec and Sennheiser), the connector is nickel plated brass with an internal crimp-ring to secure the cable