The Johnny Stewart K9's Predator Diaphragm Call produces all of the prey sounds hunters need to call in hungry predators. Its innovative 3-reed design with a fang-shape cut easily reproduces raspy cottontail, jackrabbit, and raccoon distress sounds. It features a Premium Flex frame for consistent stretch and sound, and is made of high-quality Infinity Latex for durability over a full hunting season. The K9. Johnny Stewart pioneered the most powerful weapon in the war on predators more than 50 years ago. Today, the world's most lethal predator hunters rely on the true wildlife sounds captured by Stewart and his son Gerald over the years- sounds that have led to the demise of countless coyotes, foxes, bobcats, wolves and other varmints since the early 1960s.