Description

Schilke SH-IIF tuba mouthpiece. Throat 0.316". The "Helleberg SH-IIF" has the same rim as the Helleberg 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.