| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a iron club head for golf with increased degree of freedom on club designing, high functionality and improved commodity reliability, by giving interchangeability to a club to show the most of moment of inertia on hitting a ball and to enable to select mass distribution by lowering the center of gravity or distributing weight on the periphery corresponding to a taste or technique of a player. SOLUTION: A window hole 23 is formed penetrating through a hitting point corresponding part 2a of a ball hitting part 2 on a head frame body 1 consisting of a high specific gravity metal material with specific gravity higher than or equal to 10, and another body of a ball hitting plate 4 consisting of a high specific strength metal material with specific gravity lower than or equal to 5 is mounted on the window hole 23. A hosel part 3 consisting of a high specific strength material with specific gravity lower than or equal to 5 is formed in another body on the ball hitting part 2 on the head frame body 1.</p> |
