The Schilke SH-II Concert Tuba Mouthpiece offers a refined Helleberg-style design for the professional tuba player. The Schilke SH-II features a Helleberg-style cup shape with an interior diameter of 32.76mm, similar to the Schilke Standard Series 69C4 but with a slightly tighter throat and standard backbore. Schilke's SH-IIF has the same rim as the SH-II but with a shallower bowl-shaped cup to accommodate the smaller F tuba. The throat is smaller than the SH-II. The backbore is slightly larger, similar to a Schmitt shape that opens up quicker under the throat to reduce resistance. The Schilke Geib model has the same 32.76 mm inside diameter as the SH-II with a modified rim contour. The Geib features a more bowl-shaped cup and is slightly shallower than the SH-II. The entrance to the throat is tighter yet it shares the same throat size as the SH-II with a standard backbore.

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