• Genuine Vincent Bach mouthpieces are the best available in the world. Bach mouthpieces are designed to meet every conceivable playing need and have for nearly three quarters of a century. • A Bach mouthpiece will make a poor instrument play well, a good instrument play better. Volume and excellent intonation, ease of response in the high and low register, rich, uniform timbre throughout the range, and resistance calculated to increase the players endurance - these characteristics explain why the best professional artists choose Bach. Because Bach mouthpieces are the accepted standard of quality, their numbers are familiar everywhere as designations for certain models and types. Although Bach mouthpieces have often been copied, they have never been equaled for precision, tuning, and playing characteristics. Model No. - Depth/ Cup Dia./ Shape Description • 3 - Medium/ 17.60mm/ Narrow A large mouthpiece for great volume of tone, especially in the low register. • 7 - Medium/ 17.25mm/ Narrow Fairly large size, for a strong embouchure. • 7S - Medium/ 17.25mm/ Narrow Same as No.7 but with larger throat and backbore. Freer blowing, darker sound. • 10 - Deep/ 16.80mm/ Medium wide This cushion-rim model produces the German romantic horn tone, rich in volume, beautiful • in quality. A player having no difficulty with the high register should use this model. • 10S - Deep/ 16.80mm/ Medium wide Same as No.10 but with larger throat and backbore. • 11 - Medium/ 16.55mm/ Medium wide O