Morgan Excalibur alto saxophone mouthpieces are made from the finest pure hard rubber. The formula for the rubber is exclusive to the Morgan Company and is the same formula used by the top mouthpiece makers from the 1920s to the 1950s. It is made solely from rubber with no synthetic additives. Excalibur saxophone mouthpieces feature a round chamber with a smooth rollover baffle. They have a long S-curved roof to produce that pop you want without sharpness in the palm keys. Excalibur mouthpieces have an even response from low Bb to as high as you want. The mouthpiece has a compact, centered, brilliant sound with maximum control and flexibility. The Morgan Excalibur Model Mouthpieces are traditional-style streamlined mouthpieces with round chambers and low rollover baffles. These are streamline mouthpieces with smaller bodies than the Jazz models and have a similar core tone but with more edge and power. This model is made of an exclusive pure 100% hard rubber formula. The mouthpiece castings are created exclusively for the Morgan Company using Morgan tooling. The castings are then completely finished by hand to exact specifications. These are available in Medium(E), Medium-Large(EML) and Large(L) chamber sizes. The Medium Chamber produces a bright, brilliant and centered tone. The Medium-Large Chamber produces a darker core tone with more edge than the L Chamber. The Med/Large-Large chamber produces more volume and projection than the L model with similar tonal characteristics. The Large Chamber produces a warm, deep and rich tone. Pure, 100% rubber construction Round chamber Long S-curved roof