Preston's Flock Trio Pack from Pittman contains three of of the most popular cuts in turkey call diaphragms. Each of the three has its own unique sound. All are three reeds, easy to use and also used by the most accomplished turkey callers. Frequencer - high-pitched, great for dou wits, kees kees and also elk calling. Xciter - great cutter call, very versatile. Vengeance - a very versatile, great purring call, and excellent for producing that nasal sound.