The next revelation in Elk diaphragm calling is here - enter tone trough! Elk diaphragm calls with tone trough create perfect pressures for loud vocalizations, just what you need when you're trying to locate and draw in big Bull Elk. Includes three (3) tone trough Elk diaphragms: cow and calf, bugling' 2.5 and Triple Reed. Also includes a clear carry case for protection and transportation of your diaphragm call. The premium Flex process and Infinity latex makes for longer lasting calls that are more consistent and comfortable to use. In fact, the latex comes alive! also included is the E.L.K. University Instructional DVD, featuring Wayne Carlton to allow you to master the art of Elk diaphragm calling. Made in the U.S.A.