Dead End Game Calls Mouth Diaphragm – Signature Series This turkey mouth call is designed by Tyler Presley , National and World Champion turkey caller. Built as a 3½-reed diaphragm , this call delivers incredible power and aggressive sound when you need to reach out and fire up a gobbler. Ideal for excited yelping, hard cutting, and fly-down cackles , this call is designed to handle heavy air pressure , allowing you to push it hard without losing control. When volume and intensity matter, this call answers the call. A high-performance diaphragm built for hunters who like to run a call aggressively and demand championship-level sound in the woods.