Woodhaven designed this call 4 years ago. A 3 reed bat wing cut with special gray latex on top. Great for all turkey talk. The Woodhaven Diaphragm promise - We only use premium materials such as quality soft white Johnson & Johnson tape, adhesive lined looking frames and the best latex available to build our calls! We take the time to check each piece of latex for true thickness, carefully set the reeds in place by hand and then hand stretch and set the call in our press. The call is then taped and cut in the shape you receive it in. These are truly superior calls.