The Primos Raghorn Ridge Elk Diaphragm Call Series are premium mouth calls designed for serious elk hunters. These calls are excellent for high pitch cow and calf sounds. The Preacher is medium-frame mouth calls with trimmable tape. This feature allows those with medium to small palates to get a perfect seal on the call for super accurate calling. Set at 16 degrees the sound plate is at a perfect angle for producing cow, calf, and spike bull bugles. Automatically positions for cow, calf, and spike bull calls.