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The Yamaha Custom Ebonite mouthpieces come in a wide range of sizes and configurations.
Clarinets Saxophones
Clarinets
Model ^ 4CM 5CM 6CM
Bb Clarinets Tip opening (mm) 1.05 1.10 1.15
Facing length (mm) 21.0 21.0 21.0

Saxophones
Model 3CM 4CM 5CM 6CM 7CM
Bb Soprano
Saxophones
Tip opening (mm) 1.20 1.25 1.30 1.35 1.40
Facing length (mm) 19.0 19.0 19.0 19.0 19.0
Eb Alto
Saxophones
Tip opening (mm) 1.60 1.70 1.80 1.90 2.00
Facing length (mm) 23.0 23.0 23.0 23.0 23.0
Bb Tenor
Saxophones
Tip opening (mm) 1.60 1.70 1.80 1.90 2.00
Facing length (mm) 24.0 24.0 24.0 24.0 24.0

Comments
Model Clarinet Saxophones
3C Easy control and good response from lower to higher ranges, even for beginners Suitable for beginners, helps bring out distinctive, clear sound with good response in high and low registers
4C Helps obtain a well-balanced tone over all octaves, for professionals and beginners alike Easy to obtain a balanced, clear, and focused tone in any octave, ideal for professionals and beginners
5C Facilitates a richer, fuller volume than 4C, with a greater tonal variety Provides a somewhat richer tone with greater variety of colors than 4C and excellent flexibility and response. Popular with soloists
6C An excellent mouthpiece for experienced players seeking powerful volume, strong tone, and rich tone variety Powerful volume and rich tonal variations, excellent for experienced players
7C A jazz favorite for penetrating volume with a rich, strong sound and precise tonality Rich, bold, powerful volume and accurate attacks, well suited for jazz