The Electro-Voice ND86-RC3 is a robust, highperformance, dynamic cardioid thread-on vocal microphone head for wireless handheld transmitters. This microphone head electrically and mechanically adapts to Electro-Voice (and many other brands) wireless handheld transmitters that use the common 3-contact rings, 1.25 diameter by 28-thread pitch coupling convention. The floating captured ID collar will spin freely until screwing the head on tightly. It will remain locked in place when fully tightened. This allows the desired orientation of the branding to the transmitter.