Yamaha 3 valve Euphonium & Baritone, OEM Valve Springs, set of 3.
Fits
YBH-100S
YBH-201
YBH-301
YBH-301(2)
YBH-301M
YBH-301MS
YBH-301S
YBH-301S(2)
YEP-202M
YEP-202MS
Yamaha, Baritone YBH-621, OEM Valve Spring, Set of 4
Fits
YBH-621
YBH-621(2)
YBH-621S
YBH-621S(2)