Valve Springs, Yamaha Flugelhorns, YFH-631 or YFH-8315

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Yamaha valve springs, 1 set of 3.

YFH-631; YFH-731 Valve Springs, C0141070 (very common). size is 11.5mm x 48mm.

Yamaha YFH-635; YFH-6310Z, YFH-8310; YFH-8315, C0141071, smaller size 9.65mm x 36mm.