The 180S37 features a #37 one-piece hand-hammered professional bell that produces a warm sound with great projection allowing this instrument to work well in multiple musical settings from jazz to concert or solo playing. Model #25 leadpipe allows for slight resistance that is effective in centering tone production. The silver-plate finish provides a controlled brilliance to the overall sound. A .459" medium-large bore allows the player to produce a well-rounded sound suited for all types of music. ,Standard weight, monel pistons, 1st valve slide saddle, adjustable 3rd valve slide. Comes with 7C mouthpiece and wood shell case.