This is a GP thumb rest for B♭ clarinet, made by Atelier Momo, known for their ligatures. The new price was 35,200 yen, and it was made to order. It seems they are not currently accepting new orders. There are some scratches, but there is no discomfort when using it, and it can be used without any problems. Like the MOMO ligature, it has been treated with acoustic processing, which is very effective in improving the sound's response, projection, resonance, and expansion. There are SP, PGP, and GP models, but this GP model was the one that I felt the most change with. In the case of these types of products, many only affect the sound of the lower joint, but this one changes the overall sound, perhaps thanks to the acoustic processing. Although the feeling may vary from person to person, the resonance becomes richer, and the sound becomes moderately wider. ⚠️Important points: Since it is a fixed type, you will need to have a new hole drilled at a musical instrument store to adjust it to your preferred height. Also, there is no guarantee that it can be used as is in the original hole position. In the case of the old model of the Crampon thumb rest, it will most likely fit as is. In any case, we recommend that you have your trusted musical instrument store check the installation. Thank you.