Barrels
| FIT | BRANDS |
| Standard | Backun, Buffet, Yamaha, Leblanc, Selmer USA (Centered Tone, 10G, Series 9), and most other brands |
| Standard Plus | As above, larger bore for more free-blowing feel |
|
Selmer Paris |
Selmer Paris (Not including: Selmer USA, 10G, Centred Tone, Series 9) |
|
Yamaha CSG |
Yamaha CSG I, II and III |
Bells
| FIT | BRANDS |
| Standard | Backun, Buffet, Yamaha, Leblanc, Selmer USA (Centered Tone, 10G, Series 9), and most other brands |
| Selmer Paris |
|