Patent ID: 7815521

Claim:
A golf club head, comprising: a face; a plurality of score line grooves formed in said face, each score line groove including a pair of side surfaces; and traces formed in said face by milling, wherein each of said side surface includes a first surface at a face side of said score line groove and a second surface at a bottom side of said score line groove, wherein a first angle that is formed between each first surface of the pair of side surfaces is larger than a second angle that is formed between each second surface of the pair of side surfaces, wherein an arithmetic mean deviation of a profile of said face in which said traces are formed is not less than 4.00 μm, wherein said traces are a plurality of striations which do not intersect with each other on said face, and wherein an angle formed by an arrangement direction of the plurality of striations and said score line groove is between 40 degrees and 70 degrees, inclusive, as viewed clockwise from a toe side end of said score line groove.