The September diaphragm call is designed as a well-rounded, aggressive call. Capable of slow playing, soft cow noises, but the perfect stretch to get the most aggression possible for bugling. The tighter stretch of this call&';s latex allows higher pressure while calling, making it one of our loudest calls to date. Embrace all the natural sounds of the elk woods with September in your call quiver. Manufactured by Born and Raised Call Co.