The EA-92-s is the very embodiment of classic shock mount design used many nearly all of today’s large diaphragm tube condenser microphone manufacturers (companies with the first letter "N" or "S" for example). It's universal design and size will fit not only the Gefell M990, UM900, UM-92.1s and M92.1s but also just about any other microphone of similar size. This shock mount is included with the M990, UM900-EA92 (not the vresion available on this site, email us for info), UM92.1s, and M92.1s.