The Caps lower the tone of the Tubes by an octave. The 8 Pack contains enough caps to use on any of our Boom whackers Sets.

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The Caps lower the tone of the Tubes by an octave. The 8 Pack contains enough caps to use on any of our Boom whackers Sets.

  • Expand the capabilities of your Boomwhackers
  • Expand the capabilities of your Boomwhackers

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