Patent ID: 8444503

Claim:
A golf club head comprising a face line having a depth of D1 (mm) and a land area, wherein when a boundary between the land area and the face line in a section line of a surface of the face line is defined as a point Pa; a point of which a depth is [D¼] (mm) is defined as a point Pb; a point of which a depth is [D½] (mm) is defined as a point Pc; a point of which a depth is [(D1)×(¾)] (mm) is defined as a point Pd; a radius of a circle CL 1 passing through three points of the point Pa, the point Pb, and the point Pc is defined as R 3 (mm); a straight line passing through the point Pc and the point Pd is defined as a straight line Lcd; a straight line perpendicular to the land area is defined as a straight line Lp; and an angle between the straight line Lcd and the straight line Lp is defined as θm, the radius R 3 is 0.01 (mm) or greater and 0.10 (mm) or less, and the angle θm is 40 degrees or greater and 70 degrees or less.