- Inner Diameter: .640 measured .04 inches into the cup.
- Outer Diameter: 1.094
- Cup Depth: This mouthpiece has an MDV (Medium Deep V) cup, which is similar to a Bach 1 1/2 C or 5C, Warburton MD, regular Schilke, or Yamaha C cup, but it has a slightly more V shaped transition into the throat. This cup produces a large, dark orchestral sound, which is made a little darker than the MD cup by the extra V shape.
Backbore: This top is best used on an ML (Medium-Large) backbore which can be purchased here.