Yamaha, Euphonium & Tuba Valve Button, Yamaha G0141101 Felts & G0141140 Pads set of 3 each.  

Fits:

YBB-100S

YBB-103(2)

YBB-103S(2)

YBB-104

YBB-104S

YBB-105

YBB-105M

YBB-105MS

YBB-105S

YBB-110S

YEP-100S

YEP-100SA

YEP-201(2)

YEP-201M

YEP-201MS

YEP-201S(2)

YEP-211(2)

YEP-211S(2)

YEP-321(2)

YEP-321S(2)

YEP-621(2)

YEP-621S(2)

YEP-641S(2)