TromboneChat

Posted: **Sat Sep 30, 2023 7:18 pm**

Hi all, does anyone know the size of the bumpers for an Olsen/Instrument Innovations tenor rotary valve? Thanks!

Posted: **Mon Oct 02, 2023 6:14 am**

I expect theyre a standard size, probably something like 3/16".

Bumper Size Olsen/Instrument Innovations Tenor Rotary Valve