Developed by Hans Moennig and designed to improve tone and intonation between all registers. Inverse taper conical bore made with African blackwood and silver-plated rings
- Key of Bb
- Unstained for Prestige R13 Bb clarinet
- Grenadilla wood with silver-plated ring
- manufactured in Paris
- The barrel has a changed conus and gets tighter downwards in order to get more resistance while playing and to facilitate holding the notes.