This model is on sale because it has been discontinued. It is very similar the the 66S. Email firstname.lastname@example.org if you have questions about this mouthpiece.
- Inner Diameter: .670 measured .04 inches into the cup.
- Outer Diameter: 1.124
- Cup Depth: This mouthpiece has a S (Shallow) cup, which is similar to a Schilke or Yamaha 14A4A, Warburton SV, Reeves S, Bach 3D, or GR S cup.
- Backbore: This mouthpiece comes on an Small backbore.