The DJ Calls Grafton Old Style Single Reed Duck Call has a tonal plug made out of hard rubber with the high lift to the reed base. This duck call has that old duck sound with the ring that only this call can give! The DJ Calls Grafton Old Style Duck Call has a mylar reed with a rubber/cork mix wedge block and the shell is made out of a cycolac plastic with the DJ Calls name stamped on the shell.