**All brass items are NON-RETURNABLE**
Please Note: This cup requires a screw rim to be a complete mouthpiece.
This cup model is based on the one developed for Myron Bloom. It features a generous upper bowl shape that gives rise to a deep curved throat with a very large cup volume. Bloom’s personal model is a #1 bore. Our recommendation is to start with a #8 bore and experiment further for resistance. We offer it in #1, #4, #6, #8, and #10 bore sizes.
Giardinelli threads are standard.