Yamaha Euphonium YEP-321 YEP-642 Water Key Tuning Slide Spring Screw & Cork Kit

Yamaha euphonium OEM Water key spring screw and cork kit.  Fits current YEP-321 and YEP-642 euphonium tuning slides (1986-).  Contact me if you would like to verify your model's fit or you need parts for another horn.