Boomwhackers C Major Diatonic Scale Set with Octavator Caps 8-Pack, Set includes all 8 pitches from C to c on a diatonic scale (white keys on the piano). By Brand Boomwhackers -
BOOMWHACKER OCTAVATOR CAPS Set of 8 Music in Motion
Boomwhackers Diatonic Package w/ CD and Octavator Caps