A YAMAHA silver-finished trumpet mouthpiece with a wide-mouth design for a rich tone. - Brand: YAMAHA - Model: Trumpet Mouthpiece - Color: Silver - Material: Metal - Inner diameter: Wide mouth This is a Yamaha trombone mouthpiece "SL-48S". It is for small shank and has the following features: It has a very well-balanced rim and cup, making it suitable for all-around use. A highly complete model that meets the high demands of professional musicians. The rim inner diameter is 25.25mm The throat diameter is 6.62mm. This came out during decluttering, it has been used, and it is old. Please consider before buying, if you are particular about product condition. The box says 6800 yen. Please consider purchasing after understanding that this is a used item that has been stored. Search terms Trombone Musical instrument mouthpiece Orchestra Musical instrument Performance Music Thank you for looking.