Grasp the Large Pulse Tube in one hand, then use the mallet on the “mouth side” of the tube. On the hand that holds the tube, a small hole, no bigger than a piece of eraser, sits. Strike the tube, then cover and uncover the hole with your thumb, producing a unique WAH-WAH sound. It's futuristic, alien-like, and awesome!
Comes with a mallet and carry case (color varies).