| 摘要 |
<p>PURPOSE:To easily control a position such as the height or depth of center of gravity of a head, and lower the center of gravity. CONSTITUTION:A head shell 1 is formed by combining a plurality of materials 2, 3 differed in specific gravity together, and using the material having the larger specific gravity in the lower part. Otherwise, a plurality of materials differed in specific gravity are combined together, and the material having the larger specific gravity is used in the ball striking surface lower part, the opposite side to the ball striking surface, and the front part of the head shell 1. Since the material having the larger specific gravity is used in the lower part, a head having a low center of gravity can be easily manufactured, and the height, depth and front position of the center of gravity can be easily regulated by the arrangement of the materials differed in specific gravity.</p> |
