The Q-Ax Duck Call was built to do one thing: harvest mallards. The Q-Ax Single Reed Duck Call has all the features a hunter looks for and expects. The Form Fit Radius and hand placement angle makes all day calling no problem. Each Q-Ax comes with the Slough Gut System for easy cleaning and retuning, and the thick, thin walled design. The barrel is material top heavy to create an initial bark, then as you work down the call, the walls thin out to help create the ability to do those soft, smooth, low end cuts and whines. Top to bottom it has built in duck, which is exactly what a hunter is looking for.