The MS QC 1 B is a quick coupling for effortless changing of microphone holders and booms. The sophisticated two-piece construction made of powder-coated aluminium and steel consists of the receptacle with 5/8" internal thread, which is attached to the microphone stand, and the 3/8" attachment, which is screwed to the microphone holder or boom. The clever tongue and groove mechanism with hexagonal flange ensures a tight connection and controlled alignment. The MS QC 1 B Quick Coupler comes with a threaded adapter for universal compatibility with all microphone stands, microphone holders and booms.