Beechler Diamond Inlay 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. All Beechler and ARB mouthpieces have been lab tested and proven safe for all long and short term human contact according to Reach compliance standards.