Beechler Black Diamond and White Diamond alto mouthpieces are made in three different bore sizes. 

• The small bore has a medium high baffle and horseshoe shaped chamber producing a fast column and generating a powerful and brilliant sound, rich in overtones
• The medium bore has an open style baffle and open chamber producing a medium fast air column allowing for the production of subtleties of sound while maintaining ease of projection
• The large bore has a medium baffle and open chamber which produce a rich saxophone sound

The materials used for these mouthpieces is a sturdy combination of traditional hard rubber and new age plastics designed to utilize the full dynamic range of the instrument.