The Primos Elk Select 4-Pak offers the patented Sound Plate feature that brings the elks running. Your chance for success depends on how accurately you reproduce elk sounds and the Sound Plate automatically positions the call at the right angle. Reproduces both cow and bull language with one call (no more switching calls). The Sound Plate also supports the reeds so they won't deform like conventional reeds. Includes Sentry Plate, Ivory Plate, Imperial Plate, and Hyper Plate with case.