Description Put one of these caps on the end of a Boomwhacker tube and 'll lower the tone by a full octave! Play the tubes as usual or hold them vertically and tap on the floor as a stamping tube. Place on the higher-octave Boomwhacker tubes to create the same tones as the bass octave tubes. Place on the bass octave tubes, and take Boomwhackers down another octave, making a 3-octave range possible. Set of 8. Estimated shipping dimensions: 5.1INCH X 1.6INCH X 5.4INCH Estimated shippimg weight: 0.15POUND
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