The Knight and Hale Yalla Hammer is the next step in the evolution of the friction turkey call classic, the Ol" Yeller. It"s got the same advanced Slatek™ calling surface, with a few new features. First, its base is made with wood-impregnated plastic for the durability of plastic and the sound of wood. Second, it features an integrated soundboard for unbeatable realism. Third, it comes with the Super Striker, which works in any weather.