THESE GENUINE YAMAHA WATERKEY SPRINGS (3RD SLIDE) ARE SUITABLE FOR THE FOLLOWING SUITABLE FOR FITTING ON YAMAHA CORNET'S, TRUMPET'S, FLUGEL HORN'S, ALTO (TENOR) HORN'S. Alto Horns(Tenor Horns) YTR-9620 YTR-9630 YTR-9635 YTR-9636 YTR-9710 YTR-9810 YTR-9820 YTR-9820C YTR-9825 YTR-9830 YTR-9835 YTR-9910.
