D'Addario MJS-D8M-MB Select Jazz Marble Alto Saxophone D8 Mouthpiece Medium ChamberDiscover the sound that sets the standard of jazz with the D'Addario Select Jazz marble mouthpiece for Alto, which captures the feel and tone of legendary products from years past. The D'Addario Select Jazz marble mouthpiece initiates a perfect union of tradition and innovation so you can always play your best. Specifications Tip opening: . 073" (or 1. 86mm) Facing length: Medium Chamber: Medium All DAddario Woodwinds rubber mouthpieces are designed