KER-RJ51/2S
调性/bB调
材质/黄铜
表面处理/镀银
配置/不锈钢活塞、固定手指勾、斜4键
上下盖镀金

Key/ bB
Body material/Yellow brass bell
Surface/Silver plated
Stainless steel piston
Up and down cover Gold plated