Yacht Car Mouthpiece Will Sanders Model SF3 17 1/2M (Inner Diameter 17.5mm / Throat Diameter 4.3mm) Standard Price: 16,500 yen Used only once at an orchestra concert, but no longer needed, so I am selling it. The period of use after purchase was about 3 months (playing 1-2 times a week) and only once for the concert performance. It will be shipped after proper disinfection.