Variable wall thickness bell for full, rich sound. MB2 mouthpipe provides quick response and excellent intonation. French bell bead rim with low dome wire improves overall projection due to the refined, sharper bell rim edge. Skeletonized valve stem allow for increased flexibility in instrument response and timbre. Narrow brace set is reminiscent of designs from the 1930s, 40s and 50s, helping give the instrument a quicker response and transmit vibrations efficiently. High water key chimney improves resistance characteristics and overall tone.