WoodHaven Pot Turkey Calls have been leaders in sound quality for over a decade. The Carbon Crystal by WoodHaven is made of American walnut with a pure-crystal calling surface and a carbon-fiber resonator for a more authentic hen sound. Carbon-fiber resonator isn't damaged from temperature or moisture. The Carbon Crystal comes with three strikers - laminated flare-tip, hardwood, and cut and cackle - conditioning stone, and surface-saver lid.