| 摘要 |
The present application relates to a golf club having a hollowed head portion connected to a hollow shaft portion forming a sealed, internal chamber within the club. A flowable weight is positioned within the chamber. A two way valve allows the flowable weight to pass therethrough and into the hollowed head portion by centrifugal force as the club is swung, and allows the flowable weight to return from the hollowed head portion by passing through the valve by gravity as the club is inverted.
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