Made from superior quality cast white pearl acrylic. This adjustable whistle will do it all. With the insert all the way in you can easily call green wing teal, wigeon, and drake mallards. Pull the insert out to the machined inset groove to enjoy one of the loudest pintail calls ever made. Call is fitted with an anti corrosive double o-ring insert. My whistles are extremely easy to use and are quickly mastered by most all hunters.