S.E Shires' Custom Series Professional Eb Alto Trombone combines the quick response of a one-piece bell with the expansive tone of a two-piece, giving you a clear, pure sound with a consistent tone throughout the dynamics. Its unique A7YLW bell is made of yellow brass which helps achieve a strong fundamental and overtone structure. Designed for serious musicians, this trombone gives you an unparalleled level of customization so you can craft your ideal instrument. With a variety of interchangeable leadpipes, bells and valve sections to choose from, you can tailor the sound and response to perfectly match your playing style. Visit your local Guitar Center today to try out the Custom Series Professional Eb Alto Trombone for yourself and experience the custom-built tone and response that will inspire your best playing.