Used AR Resonance 42-7 Trumpet Mouthpiece Backbore
|
|
|
|
Used AR Resonance 42-7 trumpet mouthpiece backbore in silver plate, very good condition with some minor insertion wear but no plating loss. This backbore has a 4.2mm throat (hence the "42" designation) to match the similarly stamped tops. Threads compatible with AR Resonance, Warburton, Greg Black, and others. Medium-open backbore, approximately equivalent to AR's current M backbore.
UTP-1075
 |
 |
 |
 |
 |