| 摘要 |
<p>This shaft (1) is provided with an outer shell. The outer shell is provided with: a cylindrical part (2); and a curved part (3) which is continuously provided to the cylindrical part (2), and which is provided with a plurality of protrusions (3a) arranged side by side in an outer peripheral direction of the shaft (1). The curved part (3) has a uniform thickness, and the plurality of protrusions (3a) thereof extend in an extension direction of the shaft (1). As a result, a shaft with which the EI thereof can be reduced while maintaining the strength thereof, and a golf club provided with said shaft can be obtained.</p> |
