| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a golf club head that can obtain the same trajectory as that where a ball is struck at a center-of-gravity position even if the ball is struck at an upper or lower position than the center-of-gravity one. SOLUTION: In this golf club head where a plurality of grooves G in a horizontal direction are formed parallel on a ball-hitting surface 2 of a head 1 for striking a ball, the cross-sectional shape of the groove G is formed so that its hooking to the ball surface becomes larger successively in steps from the lower to upper portions of the ball-hitting surface 2.</p> |
