Brass Instrument Bell Trumpet Mouthpiece Extractor Trumpet Bell Extractor
* Use of the method
Upper support plate and lower support plate adjusted to the appropriate position (to maintain parallel), the upper support plate cup bracket stuck on the outer edge of the mouthpiece cup, two cards stuck on the edge of the mouthpiece hoops (stuck on the mouthpiece should be in the middle of the lower support plate) to tighten the card. The two support screws are evenly pressed (turned clockwise). Up and down the two support plate must always be kept parallel, screwed to the end of the feeling screwed up this is the key to pull the mouth of the number, the two sides of the screws do not rotate too large, preferably 1 / 3 circle
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