GR 64 Series - .640" / 16.26mm - GR Mouthpieces

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GR 64 Series - .640" / 16.26mm

GR Mouthpieces > Trumpet
Quick Comparison - The GR 64 Series cup diameter is somewhat similar to a conventional 7 diameter.

Classic Blank is standard.  Studio, Symphonic, and FatBoy are available as a special order on some models.
Backbores, other than listed, are special orders.

13A4a players who want more chop freedom, more accurate attacks, fatter sound, and relief from "bottoming out" play the 64Z**!

Also available as a standard order:

Ask us about other 64 Series designs on file!
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