The mission of Patrick Mouthpieces is to provide trumpet players the tools necessary to perform on their instruments what they hear in their head, and to enable us all to switch between musical genres and not compromise sound or performance.
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This mouthpiece was modeled after an early Elkhart model Bach 3C. The rim is very comfortable for hours of playing. The hole size, and back-bore are the same as the 1 1/2. The playing and sound characteristics are very similar to the 1 1/2, but with a slightly smaller inner-diameter.
3C: 0.6657 inner diameter measured at 0.030" 0.1440 throat 27 drill 1.0659 outside diameter