The Rocky Mountain Hunting Calls Wapiti Whacker Bugle Tube is expertly designed to project diaphragm bull elk bugles, grunts, and screams. Loaded with great features the Wapiti Whacker is the ideal bugling tube for every elk hunter. The Wapiti Whacker is designed with the V.E.T.T Calling System that is placed in the mouth opening to assist in creating stronger backpressure, this allows the user to change notes easier and maintain the desired pitches with greater ease. This bugle tube comes with the V.E.T.T mouthpiece engagement ring offering an optional 1 1/2" opening. The bugle tube is designed with to create deeper and raspier base chuckles, growls and grunts as well as allow for excellent pitch on the high-end screams and bugles without compromising on tone quality. The end of the tube is rubber coated to eliminate plastic vibration to keep your calls sounding realistic and pure.