Unleash the inner demons with the Phelps Game Calls Monster Diaphragm. This call features a 1.5 reed system that is stretched out super tight. Doing so while having the Ghost Cut will help you have those loud scream in your ear calls that will have those bulls and cows coming from miles. The Monster works great for replicating big and loud bugles but also works great for getting the volume that you need for those high pitched cow calls.
The Monster Diaphragm only comes in a size Medium