Primos Imperial Reed Elk Call- The "Sound Plate" automatically positions the call in your mouth at the right place and angle, making calling elk easier. The 30 angle of the Sound Plate, the double-reed design and "V" cut in the bottom reed make the Imperial Plate Double perfect for reproducing cow and herd bull sounds. The "V" cut also adds to the raspy sounds of the herd bull's growl, bugle, and chuckle. Angle of the sound plate is set at 30 degrees Large "V" cut in second reed produces cow and herd bull sounds Also "V" cut adds raspy sounds of the herd bull's growl, bugle and chuckle