All Wenches feature ridges and ditches on the sounding board that give the call its raspy highs and lows and keep the call from sticking. In addition to ridges and ditches the Original Wench features a tuning hole in the bell or stopper which allows you to change the pitch of the call and sound like two different ducks. Covered the call is lower in pitch and uncovered it is higher. Perfect for timber and open water calling. You won’t be disappointed. Features Tuning hole in stopper/bell allows you to vary pitch. Covered the pitch is lower; uncovered the pitch is higher Super-hard polycarbonate barrel for intense volume The economical choice for the hard core waterfowler who seeks accuracy and versatility.