One of the most realistic and sharpest sounding calls of our friction lineup, the Walnut Crystal over slate is an easy to use, producing realistic hen turkey sounds. The slate tone board and crystal surface has a wide range of sounds with the loud two note yelp, to soft clucks and purrs. Our Walnut Crystal over Slate is our go to call for locating in vast canyons where volume is needed along with soft realism as you close the distance.