Yellow brass 4/4 in BBb.
The B&S GR51 is a BBb-Tuba in 4/4 size with a .748" bore and a 17.716" bell. It is constructed of yellow brass and features 4 rotary valves (right) and a clear lacquered finish.
Specifications
- BBb-Tuba, B&S
- 4/4
- 19mm/0.748" bore
- 450mm/17.716" bell
- yellow brass
- 4rotary valves (right)
- clear lacquered