This three-section didgeridoo is outfitted with two custom O-ring locking anodized aluminum collets and stainless steel mouthpiece. Ranges over an octave from high A through a low F sharp. A medium bore instrument with thicker walls and a continuous progressive 4″ bell gives more volume to harmonics and overtones without sacrificing volume. The super boom has tubes starting at 1.5″ and flare to 3.875″