| 摘要 |
<p>PURPOSE: To provide a club head with which is relatively freely settable in its centroid, etc., without receiving some limitation on the thickness of a face. CONSTITUTION: A high-hardness layer 11 is formed only on the ball fitting surface 5 of a steel head body 1. As a result, the reduction of the thickness B of the base 4 is made possible and the adjustment of a weight balance, etc., by distributing the weight corresponding thereto to a weight part 8, etc., is made possible.</p> |
