Yamaha GP59 Bass Trombone Mouthpiece, Mouthpiece for bass trombone, Golden edge and bore, Long shank, Inner diameter: 27.22 mm, Standard contour, Standard thickness, Standard cup depth, Throat: 7.25 mm, Half wide backbore, Characteristics: Relatively thin edge. colourful sound, especially with low tones. Voluminous cap for strong tones in low regions and plenty of force.
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