This is a mouthpiece from willie's Custom Brass, a brass instrument mouthpiece workshop. ・Cup Appearance: S blank (light type). The thickness of the lower part of the rim is reduced compared to the normal blank, achieving a brilliant tone. ・Gold-plated finish ・Cup Inner Diameter: 17.8mm ・Throat Diameter: 4.45mm ・Cup Shape: SC (U cup) ・Rim Shape: S rim ・Shank: STD (Suitable for 80% of horns, including Wenzel Meinl, Hans Hoyer, Wilson, Paxman, and Holton) ・Mirror finish ・Instrument tuning performed No dents, some scratches on the shank. Box and sticker included.