- Inner Diameter: .640 measured .04 inches into the cup.
- Outer Diameter: 1.094
- Cup Depth: This mouthpiece has an M (Medium) cup, which is similar to a Bach 3C, Bach 7E, Schilke or Yamaha B, GR M, Curry M, and Warburton M cup. It is an excellent all round mouthpiece with a very versatile sound. It is suitable for concert band, marching band, and jazz or big band. The M cup can also be made to blend in a chamber group or orchestral setting, especially when used with a heavyweight backbore in order to darken the sound. It functions well as a Piccolo trumpet mouthpiece with a medium cup is desired.
- Backbore: This top is best used on an M (Medium) backbore which can be purchased here.