Knight & Hale’s Double Threat double reed system predator call creates a full, multi-toned sound the coyotes, foxes and bobcats haven’t heard from a call before. This two-reed system construction allows both sets of reeds to produce sound at the same time, and with slightly different tones, produces a loud, realistic prey-in-distress sound. This intense call is easy to use and great for beginners and advanced callers alike.