Shires USA P3
TromboneIn Production
Precision Specifications
RIM DIAMETER—
CUP DEPTHMedium
THROAT ∅6.58 mm
BACKBORE—
SHANKlarge
CUP SHAPE—
Rim Width—
Rim Contour—
Throat Drill #—
Material—
Finish—
Weight—
Recommended For
Orchestral
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Special Features
- USA Series
Reference Notes
Shires USA P3 appears in the Trombone catalog section with Medium cup, 6.58 mm throat, and large shank. Database tags list it for Orchestral use. Noted features include USA Series. Use these measurements as a comparison starting point: fit and response still depend on the player, dental structure, instrument receiver, and each manufacturer's measuring method.