TMS Kobo Original Acoustic Improvement Goods Rotary Spacer-kun (Brass Torched)

TMS Kobo Original Acoustic Improvement Goods
Rotary Spacer-kun (Brass Torched)

This is an acoustic improvement good that is sandwiched between the rotary caps of a horn.
The ease of hitting the sound and the resonance will change.
Can be used with Yamaha and Alexander Holton.
We believe it can also be used with tubas and trombones.
Outer diameter 21.5, thickness 1.5, hole diameter 10.5
Weight 2g
Made of brass