The True Double II™ is part of our Piggy Back® series meaning it has a stacked double frame with one thin prophylactic reed in the top frame and two prophylactic reeds in the bottom frame. Both frames are separated by 1/16”, which doesn’t allow the reeds to stick together. The True Double II™ has a slightly higher pitch than the True Double™ (Model No. 108). The True Double II™ makes raspy yelps, clucks, cuts, and cackles.