| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a golf club head with which even a golfer having a slow head speed can increase his/her driving distance with its high driving angle. SOLUTION: A metal hollow golf club head 1 has a face 2 made of a titanium alloy, a crown 3, a sole 4, a side 5a on the toe side, a side 5b on the back side, a side 5c on the heel side and a hosel 6. The crown 3 has a groove 8 in the direction from the heel side to the toe side. The sole 4 has a rib 9 in the direction from the face 2 to the back-side side 5b.</p> |
