Elkhart 100TR student Bb trumpet outfitIntroducing Elkhart 100TR student Bb trumpet outfit The 100TR has a rose lead pipe which gives a mellow, if slightly darker tone straight from the mouthpiece through to the bell, and also makes it sing in the middle to low registers. This combined with the medium . 459 bore, gives a smooth sounding instrument with plenty of character and expression. The cupronickel slides are used to extend the lifetime of the instrument and to prevent corrosion. The