Alto horn mouthpiece with a semi-deep cup depth, size 38D4. This alto horn mouthpiece produces a dark sound perfect for use in British Brass Band work.

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Yamaha AH38D4 Alto Horn Mouthpiece Specifications:

• Backbore: standard
• Characteristics: Gives dark, round sound preferred by British brass band players.
• Cup depth: semi-deep
• Finish: Silver
• Rim contour: semi-flat
• Rim inner diameter(mm): 18.90
• Rim thickness: standard
• Throat (mm): 5.25