This is a Miraphone Tu43 tuba mouthpiece. A German friend sent me several, saying that a mouthpiece with the same rim diameter and throat diameter as the Tilz WH-B2 had been released, offering good response and control over both high and low notes. However, one is enough for me, so I am offering this unused, brand-new one for sale. I took it out of the box for the first time to take these photos. Inner rim diameter: 33mm Throat: 8.9mm European shank New price: 127 Euros (from the Miraphone website) #tubamouthpiece #tuba #tuba