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The Osmun B cup is a traditional cup by namesake. It is relatively shallow with a moderate cup shape that supports the upper register and produces a brilliant tone. Works well on 8D's in larger throat sizes.
The B cup specifications:
- .650" (16.5mm) in diameter at the joint where the cup and rim meet
- inch threads are .750-36 threads, compatible with almost all American-made screw rim mouthpieces
- standard US shank
- bright silver plated cup
- bore sizes use standard drill sizes as measurement
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