The Bach BTB411 trumpet is an intermediate-level instrument combining unique specifications and acoustic guidelines designed to develop and enhance the demanding skillsets required of today's young players. The BTR411 offers a .459" bore with a responsive 4-13/16" bell spun on a professional Bach mandrel and is finished with a brass bead wire placed in the end of the bell. This signature manufacturing process for Bach produces a trumpet extremely responsive, broad and uniquely colorful. The 1st valve thumb saddle allows the player to make quick intonation adjustments and the clear lacquer finish layers in a subtle warmth to the overall sound.