YFG-812/812C Bassoons

1. Right-hand top F# roller

2. Right-hand thumb F# rollers

3. Right-hand E rollers

4. Right-hand Bb roller

5. Right-hand pp slide system

6. Right-hand Eb trill key*

7. Left-hand rollers for C# & pp

8. Left-hand low C & low D rollers

9. Left-hand Eb trill key*

10. Joint hinge

11. A-pp arm connecter

12. Silver tonehole tubes

*Please note that either 6. or 9. may be ordered, but both cannot be installed on the same instrument.