Gold plating applied to the entire piece ★ Personal Impression With Yamaha's largest 8mm throat size, the instrument responds quickly. It requires physical effort, but if you play without widening your aperture and without relying on the mouthpiece or instrument, you can achieve a high degree of freedom in your performance. While there are products with gold plating only on the cup and rim, this mouthpiece originally had silver plating, and then underwent full gold plating treatment at a domestic factory. Rim Inner Diameter (mm): 28.72 Throat (mm): 8