| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a set of iron clubs easy to hold and hit by deviating weight to the toe side or the heel side by changing the form of a cavity in accordance with the order of club numbers in the club set while maintaining durability of a head and minimizing weight of the head. SOLUTION: In a set of iron clubs each comprising a head composed of a face surface 3, a head body 1 supporting the surface 3, and a cavity formed on the back of the face surface 3, the cavity is composed of a first cavity to form a through hole 2 in the head body 1, and a second cavity 5 formed of a wall surface connected to the through hole 2, and the form of the wall surface of the second cavity 5 is changed in accordance with a club number.</p> |
