You could say every diaphragm in the Zink line is a Josh Grossenbacher signature, since he hand-builds them all. But this one is truly a masterpiece " and his favorite. Stretched to a tight tension with heavy latex, the V-notched top reed and short-notched lower reed create a full range of turkey sounds. Whether you want loud, raspy volume or clear, quiet coaxing, the Josh Grossenbacher Signature does it all and then some. Product Features V-notch cut triple reed Tight tension Short-notched lower reed Great range from raspy to clear Heavy latex for far-reaching, loud sounds Custom built by hand Includes: Storage Case