| 摘要 |
An iron golf club, comprising a head part (1) having a face surface (4), wherein a coefficient of restitution obtained when a ball is hit by a sweet spot on the face surface (4) at a speed of 44 m/s falls within the range of 0.81 or more to 0.95 or less, the effective face area of the head part (1) i s 2500 mm?2~ or larger to 5000 mm?2~ or smaller, the effective deflection leng th is 36 mm or longer to 72 mm or shorter, and the face thickness at the sweep spot is 1.0 mm or thicker to 2.5 mm or thinner. |
