GR Compu-Bal trumpet mouthpiece 63 rim BR_CLEAN OUTER DIMENSIONS

OUTER DIMENSIONS

The specially designed Optimal Pressure System fits right into your trumpet and works with your normal mouthpiece top to teach you to use less pressure while actually playing

Instrument Fit Information:

It also makes fantastic practice aid for the experienced player and is great for keeping in shape for that important up-coming gig when on the road…

These trombone cases offer a stylish design

GR Compu-Bal trumpet mouthpiece 63 rim BR_CLEAN OUTER DIMENSIONSQuick Comparison The GR 63 Series cup diameter is somewhat similar to a conventional 10 diameter. Classic Blank is standard. Studio, Symphonic, and FatBoy are available as a special order on some models.