| 摘要 |
<p>PROBLEM TO BE SOLVED: To enhance the degree of freedom of the planning of a club and the function of the club while achieving cost reduction and the enhacement of the reliability of a commodity by enabling the mass distribution corresponding to the taste or technique of a user by the wt. reduction of the whole of a head, the lowering of the center of gravity and the distribution of a peripheral wt. and imparting interchangeability to a hosel part. SOLUTION: A hosel part 3 composed of a material high in specific gravity is separately formed to the ball hitting part 2 of a head main body 1 composed of a metal material relatively high in specific gravity.</p> |
