This loose ring has the Butterfly mouthpiece. The butterfly mouthpiece by virtue of its design allows a step-up in control over flexible rubber mouthpieces due to the wings and a flat port putting additional pressure on the tongue.
The ports for the rings are angled in such a way that that flat port lays smoothly against the tongue. The mouthpiece is directional, so proper care must be taken that it is facing the correct way.
Made in Germany
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