Tone Color Changer 【Kabuto-kun】 Used for tuba. This is the Tone Color Changer "Kabuto-kun". By attaching it to the bell of the instrument, you can change the tone color. • Product Name: Tone Color Changer 【Kabuto-kun】 • Condition: Used (operation confirmed) • Condition: There is some wear and tear, but it does not affect performance. • Included items: All items shown in the photos. Recommended for those who want to change the tone color and expand the range of expression. Please forgive any minor scratches as it is a used item.