A large tuba mouthpiece with full, lively tone and a splendid low register, for players with a strong embouchure. Recommended for large-bore instruments. Fairly large diameter, producing a big, vivid tone. Top-selling mouthpiece for all-around work. Has an even register, substantial tone of excellent carrying power. Slightly smaller than No. 18. Recommended for use in school bands. An excellent mouthpiece whenever dark tone quality and enormous volume is desirable.