Carltons Tone Trough Diaphragm Elk Call - “It's a revolution in elk diaphragm calling,” says Wayne Carlton. “The built-in sound chamber, or tone trough, allows hunters to blow the call using less pressure while achieving great sounds. Because less pressure is required, the life of the call and of the reed is prolonged. The unique design of the Tone Trough reduces gagging by not engaging the roof of the mouth. The Tone Trough sound chamber produces the highest pitch bugles, as well as the most authentic nasal cow calls found on the market.”Tone Trough Diaphragm calls use high-quality Infinity Latex®, which is easy to blow, as well as being longer lasting than other types of latex on the market. The Premium Flex™ frame ensures consistent fit and stretch from call to call.The two reeds on the Double Reed create mature bull and cow vocals. Calls use high-quality Infinity LatexThe two reeds on the Double Reed create mature bull and cow vocalsThe Premium Flex frame ensures consistent fit and stretch from call to callThe two and one-half reeds of the Buglin' 2.5 make realistic bull bugles.The two reeds on the Double Reed create mature bull and cow vocalsThe one thin reed on the Single Reed creates great young cow moos and calf vocalsThe Cow & Calf 1.5 call has one and one-half reeds for great young cow moos and calf vocalsThe three thin reeds of the Triple Reed make mature cow and bull vocals