| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a golf club by which the carry of a ball is larger than that of a conventional golf club even by means of same force and same swing speed. SOLUTION: A passage 4 with both closed ends by adopting at least a part which is brought into contact with the rear surface of the sweet spot of a club face 21 as one end is provided in the club head mainbody 20 of a golf club 1 so as to execute configuration by filling liquid and/or a solid 5 inside the passage 4.</p> |
