Compatibility: Compatible with Yamaha marching euphonium and baritone models YBH-100S, YBH-201, YBH-301, YBH-301(2), YBH-301M, YBH-301MS, YBH-301S, YBH-301S(2), YEP-202M, YEP-202MS. Dimensions: Each spring measures about 43 mm length × 15 mm width × 1.1 mm wire diameter for exact fit. Construction: Made from steel for long-lasting tension and performance. Smooth Valve Action: Restores responsive piston movement for fast, reliable key reset during play. Stable Performance: Maintains consistent valve tension for marching band, concert, and practice use.
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