The JTR500 is an excellent entry-level student trumpet. It has been designed to be easy to play and produces a focused sound with open note targets. The Jupiter 408 features an adjustable 3rd valve slide ring and the 1st valve thumb saddle is positioned to suit smaller hands. Medium-large 0.460"(11.68 mm) bore ,4.8" (123 mm) bell ,Rose brass mouthpipe and tuning slide bow ,Stainless steel pistons with Delrin valve guides ,Rounded tuning slide design ,Adjustable 1st valve slide saddle & 3rd valve slide ring ,Clear lacquered finish. "A perfect way to start!" 5 Year Warranty.