| 摘要 |
<p>PURPOSE:To provide a high performance metallic head which can hit a faster ball than a ball in a conventional wooden head and which is excellent in the hitting sense. CONSTITUTION:Hollow cylindrical bodies 3, 3 made of aluminum or an aluminum alloy are arranged at both sides of a basic disk body 2 made of aluminum, aluminum alloy, titanium or titanium alloy and also disk bodies 4, 4 made of titanium or a titanium alloy are joined together as a unified body to constitute the whole body as a straight columnar form.</p> |
