This is a large F/Eb tuba mouthpiece, and the smallest CC/BBb tuba mouthpiece available. This mouthpiece is ideal for full size tubas in small to medium Bands, and orchestras. Based on a Helleberg 7b, but with better pitch, articulation, and clarity of sound. Great for large F/Eb tuba excerpts in an orchestra, or band. Rim is 1.255 and the throat is .318" diameter, deep funnel shape cup.

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