These Friction Turkey calls are a collaboration of Big Sean's time in the field and Bill Zearing's many years if manufacturering experience. These are all hand made by Bill Zearing of Cody Turkey Calls, in Halifax Pennsylvania. Bill has been in the turkey call business for over 40 years. So who else better to partner up with to create one of a kind friction calls for our BSCC customers. The box calls are all Cherry except for the friction sound board, which is Hickory. These box calls are designed with a Trademarked Concave lid for easy use and superior sound. The sound that comes out of these box calls is like none other! Bill Zearing has more technology and testing into this call than any other box call on the market. The Slate call is a five piece Cherry wood pot. These calls are put together one at a time and we use the highest quality slate material on the market. The slate calls come with a regular Hickory striker and a Carbon tipped Hickory striker. Chalk included with box call and the slate calls come with scratch pad for slate. Made in the USA. 100 percent satisfaction guaranteed.