The Zink Thunder Series calls consists of four aluminum-framed mouth calls. This one is the Zink Thunder Cutter Diaphragm Call. It is a 3-reed construction with the cutter cut. This versatile mouth call delivers high-pitched yelps, cutts, and clucks as well as soft purrs. Product Features Custom stretched and handmade in USA 3-reed construction Fits a variety of tones and calling styles