Lower the octave of your Boomwhackers!
These caps lower the pitch of a Boomwhacker by an octave when placed on one end of the tube. The 8-pack contains enough caps to use on any of the Boomwhackers sets.
- Durable, non-toxic plastic
- Lowers the pitch 1 octave
- Set includes 8 caps
- Boomwhackers sold separately