Kazoo is made of knotless aluminum alloy, the sound is clear and crisp, and there is no need to worry about deformation and damage due to extrusion.Kazoo is made of unconnected aluminum alloy, the sound is crisp and crisp, and there is no need to worry about deformation and damage due to extrusion.The aluminum alloy of Kazoo is made by a jointless process, and the sound is crisp and crisp, and there is no need to worry about deformation and damage due to extrusion.