Family Owned and Operated for over 40 Years. Beechler Tonalex White Bb Clarinet Mouthpiece - B17. Beechler Tonalex mouthpieces have medium baffles with open chambers. Tonalex alto mouthpieces now also come in medium and small bore.The clarinet has a medium open chamber. The white acoustic resin in these mouthpieces favors the softer singing qualities of the instrument. The item "Beechler Tonalex White Bb Clarinet Mouthpiece B17" is in sale since Wednesday, September 9, 2020. This item is in the category "Musical Instruments & Gear\Wind & Woodwind\Parts\Mouthpieces". The seller is "weinermusic" and is located in Mineola, New York. This item can be shipped worldwide.