Boomwhackers Octavator Tube Caps

Boomwhackers Octavator Tube CapsPut one of these caps on the end of a Boomwhackers Tube and presto- boomo!, you've lowered the tone by an octave! (That's 8 notes if you're counting.) Play the tubes as usual or hold them vertically and tap on the floor, etc., as a "stamping" tube. Placed on the higher octave tubes create the same tones as the bass octave tubes. Placed on the bass octave tubes, they go down another octave, making a 3-octave range possible.