The DJ Calls Sonderman 66 Single Reed Duck Call is the latest duck call in the DJ Duck Call collection. Tom designed this duck call in honor of his grandfather, Al Sonderman. DJ Duck Calls is proud to bring this famous call back into the hunting world. The DJ Calls Sonderman 66 Duck Call is made of walnut with cedar tonal parts for greater moisture resistance. The Sonderman 66 duck call has the DJ Calls logo lasered into the shell and is 5-3/4 inches long.