All Flugelhorn Mouthpieces avaiable in the following shanks:
German Shank 10.0 mm, American Shank 9.3 mm, Yamaha Shank 9.6 mm
FLUGLEHORN            
Bore: 4.2 mm 4.0 mm 3.8 mm 3.6 mm 3.6 mm 3.6 mm
Exclusive   Very   Medium   Medium
  Rim (mm) Cup (mm) Deep Deep Deep Medium Shallow Shallow
FL1 28.0 17.6 1A 1B 1C 1D 1E 1F
FL2 27.8 17.4 2A 2B 2C 2D 2E 2F
FL3 27.6 17.2 3A 3B 3C 3D 3E 3F
FL4 27.4 17.0 4A 4B 4C 4D 4E 4F
FL5 27.2 16.8 5A 5B 5C 5D 5E 5F
FL5W 29.0 16.8 5A-W 5B-W 5C-W 5D-W 5E-W 5F-W
FL6 27.3 16.6 6A 6B 6C 6D 6E 6F
FL6W 28.8 16.6 6A-W 6B-W 6C-W 6D-W 6E-W 6F-W
FL7 27.1 16.5 7A 7B 7C 7D 7E 7F
FL8 26.9 16.4 8A 8B 8C 8D 8E 8F
FL8W 28.4 16.4 8A-W 8B-W 8C-W 8D-W 8E-W 8F-W
FL9 27.0 16.2 9A 9B 9C 9D 9E 9F
FL10 27.2 16.0 10A 10B 10C 10D 10E 10F
FL10W 30.0 16.0 10A-W 10B-W 10C-W 10D-W 10E-W 10F-W
FLUGLEHORN    
Bore: 4.4 mm 4.2 mm
EXPORT LINE   Extr. Very
  Rim (mm) Cup (mm) Deep Deep
EFL3 27.6 17.2 3A 3B
EFF4 27.4 17.0 4A 4B
ELF5 27.2 16.8 5A 5B
ELF6 27.3 16.6 6A 6B
EFL7 27.1 16.5 7A 7B
EFL8 26.9 16.4 8A 8B
FLUGLEHORN      
Bore: 3.8 MM
USA MODELS    
  1 1C 1 1/4C 1 1/2 C 3C
Rim mm 27.4 27.4 27.5 27.3 27.3
Cup mm 17.0 17.0 16.8 16.8 16.6
FLUGLEHORN  
Bore: 3.8 MM
USA MODELS
5C 6C 7C 7E 7EW
Rim mm 27.1 27.2 26.9 27.4 28
Cup mm 16.6 16.4 16.4 16.3 16.3