Yamaha 3 valve YBB, YEB, & YSH Tuba and Sousaphone. Yamaha H1141070, D18mm x L50mm. Yamaha 4 valve YBB, YCB, YEB, & YFB Tubas. Contact me if you wish to verify your model's fit or you need parts for another horn. For additional springs, see my valve spring reference chart.
