Hook's Custom Calls Devastator Turkey Mouth Call is a variation of the 3 reed modified V Call. The Devastator goes from soft calling to the most aggressive. This is a great all around call for the avid turkey hunter. All Hook's diaphragm calls are constructed through a unique process. Each call is mechanically stretched for absolute consistency. The size of the tape is unique to Hooks Custom Calls. The construction process is like no other in the industry, requiring considerable more time to build each call, resulting in a very user friendly diaphragm call.