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John Packer '600' series mouthpieces benefit from the same high level of care and attention as our range of JP Musical Instruments. These mouthpieces offer unbeatable value and are a reliable choice for students and entry level players.

Designed for ease of use, JP mouthpieces are generally free-blowing and capable of playing with a bright and attractive sound. The JP range of mouthpieces has been developed to mimic the performance of more expensive makers.  

This JP603 4B model has been designed specifically for players looking for excellent resonance in all registers. 

Cornet JP603 4B Silver mouthpiece

  • Diameter: 26.84 mm
    Cup Diameter: 16.50 mm
    Rim Width: 5.17 mm
    Bore Size: 4.27 mm
    Back Bore: V-type
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