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.

Features:

• Durable, non-toxic plastic
• Lowers the pitch 1 octave
• Set includes 8 caps
• Boomwhackers sold separately