Patent ID: 8602913

Claim:
A putter head comprising: a head main body; and a face insert mounted in a face surface of the head main body, the face insert comprising at least one low hardness portion and at least one high hardness portion, wherein the face insert has a boundary face between the at least one low hardness portion and the at least one high hardness portion which is inclined relative to aback-to-forth direction of the putter head, wherein the face insert comprises a plurality of the low hardness portions and a plurality of the high hardness portions so that the low hardness portions and the high hardness portions are arranged in multiple layers along a direction from a top side to a sole side of the putter head, wherein each of the plurality of the high hardness portions is separated from a front face of the face insert by the plurality of the low hardness portions so that two low hardness portions adjacent to the high hardness portion are combined with each other before a front edge of the high hardness portion and the plurality of the low hardness portions are continuous with each other.