Tubamanplus #1 Mouthpiece The following is quoted from the HP: 【Product Features】 ◆ Made in Japan with extremely high precision. Production is done in collaboration with a metalworking workshop in Yamagata Prefecture. Processing is done using equipment that usually produces automotive parts with an accuracy of 1/500 to 1/1000 mm. This surpasses the accuracy of musical instrument mouthpieces, which have a standard of 1/10 to 1/100 mm, achieving stable quality. -------- 【Model Explanation】 ・#1 This model was created with the concept of "32.8mm ball cup." Currently, ball cups (U cups) with an inner rim diameter of 32.0mm or 33.0mm or more are the mainstream, and U cups with a size similar to the popular Helleberg/Geib, etc., were only released by a few companies. The moderate and pleasant resistance reduces breath consumption and gives the sound brilliance. In addition, because it uses a rim with a good and stable feel, it is possible to produce a rich tone stably, and it has become a mouthpiece that is easy to control for many people. For B.C. tuba Rim inner diameter: 32.8mm Throat diameter: 8.2mm → 8.25mm Deep U cup Because the rim is made very flat, there was a situation where the skin around the lips would escape outwards, so the edge was slightly shaved. The phenomenon of the skin around the mouth being pulled outwards disappeared. The throat diameter has been shaved by only 0.05mm. This has created more room for breath. Although it has been modified and is now very easy to play, the length of the mouthpiece is long when inserted into the instrument, and it was confirmed that it could not be stably inserted into the mouthpiece pipe because it would catch a few millimeters. Therefore, I have decided to let it go. As written, I think you will be able to feel the good response of the direct machining. I will consider a slight discount, so please contact me.