GR Trumpet Mouthpiece
GR Mouthpieces are being played by the world's top call brass musicians, plus GR is the mouthpiece of choice for the finest performers, educators, and students.
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Harrelson 5MM SpectraTone Modular Mouthpiece Rim
Mysterious GR Mouthpiece (question in comments) : r/trumpet
GR Mouthpieces - G66MX w/#2 bb & G66 FD. Pristine
Trumpet Mouthpiece Set, Trumpets Mouthpieces Replacement Rich Sound for Playing : : Musical Instruments, Stage & Studio
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Open box, excellent condition. Gold plate.
GR 66.8 B-2.8 Trumpet Mouthpiece (Gold Plate)
GR Mouthpieces - Frank Kaderabek GR Piccolo Trumpet Mouthpiece. 64 diameter Semi-wide cushion rim Similar to GR P cup Piccolo #3 bb Great on piccolo and D trumpet. Loved by Frank Kaderabek!
Like to try 3Cish GR mouthpiece with specific rim contour - View topic: Trumpet Herald forum
GR Mouthpieces Compu-Balanced Trumpet Mouthpiece - E65S