使用最先進的電腦與技術進行設與生產，質地舒適且安全，吹奏起來容易上手。輕重適中，適用於各種演奏方式。此Yamaha吹嘴適用所有的演奏者。
67C4
Rim inner: 32.06mm
Throat: 8.10mm
A perfect match for Bb and C instruments. All-around versatility. Smooth, mellow tone throughout the instrument's range. Plenty of volume and power.