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.