Yamaha Euphonium, YEP-201M YEP-202M, YBB-631, Water Key Set - 1st Valve

Yamaha YEP-201. 201M, 202M, 632, YBB-632, YBH-831, YHR-567, 1st valve slide Water Key Set, Waterkey, spring, screw, & cork.  Nickel P/N H1991001. Contact me if you wish to confirm your model's fit or need parts for another horn.