Product ID: 76ObrianClari3Mpc
This is a vintage Kay O'brien mouthpiece for Bb clarinet. The piece is in nice condition all around the outer body, beak and shank. Its facing profile of the table, tip, and side rails is excellent. The tip opening on this mouthpiece measures a little on the smaller side at .038” which is just under 1 mm. This would be a nice choice if you want an O'Brien to use with heavier reeds. This particular piece is on the brighter side and shows off flexibility and a clear upper register.