Converts 6-pin half moon LEMO connector found on MSA Sordin military communications headsets to common NATO standard TP120 / U174 / Helicopter plug - Now you can use your MSA Sordin headset with any Peltor compatible PTT - Self-locking quick-release adapter, simple push-pull installation with no modification to your headset needed - Made by Armorwerx, a division of The Mercenary Company