H.S Strut Expert Edge 3 Diaphragm Turkey Call CD Combo Pack -H.S. Strut Expert Edge 3 Turkey Call Combo with DVD by Hunter's Specialties - If you have ever wanted to learn or improve diaphragm turkey calls, this combo pack is perfect. It has a 3 pack of mouth calls and includes an instructional DVD. The calls included are the E-Z Rasp, Raspy Old Hen, and Derringer.