The Primos High Roller is a high-performance duck whistle crafted from rugged green polycarbonate for crisp, clear sound. It features a unique built-in roller bar that automatically produces the fluttering trill of a Pintail or Widgeon, eliminating the need for complex tongue-rolling techniques. This high-volume tool is engineered to cut through wind and accurately replicates the vocalizations of Mallard drakes, Pintails, Widgeon, and Green-winged Teal. Its durable construction and effortless operation make it an ideal confidence call for finishing ducks that have become shy of traditional mallard hen quacks. Safety Note Avoid blowing this high-pitched whistle at maximum volume in enclosed hunting blinds to prevent ear fatigue, and ensure the internal roller remains free of debris for proper function.