Yanagisawa YANY BooStar Yamaha, Replacement Screw for Neck, Suitable for Yamaha saxophones, Produces moderate resistance and a voluminous sound throughout the whole register, In addition to the basic ""screw A"", adding a ""screw B"" or ""screw C"" (which have different weights) allows for 3 types of adjustment, This produces different tones, dependent on playing style or music genre
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