H.S. Strut® diaphragms with Tone Trough create perfect pressures by guiding air over the latex, while assisting with placement in the hunter's palate. The Premium Flex™ process and Infinity Latex® make for longer lasting calls that are more consistent and comfortable to use. In fact, the latex comes ALIVE! This 2-Pack includes both the Tone Trough Raspy Old Hen and Double D diaphragms. Each featuring 2 ultra-thin reeds, switch back and forth between the two to create a variety of realistic hen tones. Made in the U.S.A.