David Wong
| Model | Bell | Slide | Gooseneck / Valve | Tuning Slide | Leadpipe |
|
R9
|
Yellow brass
|
Nickel silver
|
Hagmann
|
Nickel silver
|
9B bronze |
|
R4F
|
Yellow brass
|
Bronze
|
Hagmann
|
Red brass
|
5S |
David Wong