Patent ID: 8574093

Claim:
A golf club head comprising: a head main body having a shaft holder inserting hole; a shaft holder which has a shaft inserting hole and is attachably and detachably installed in the shaft holder inserting hole; a bolt inserting hole which penetrates from a sole side of the head main body to the shaft holder inserting hole; a bolt which is inserted into the bolt inserting hole, screwed into the shaft holder, and fixes the shaft holder to the head main body, an axis center of the shaft inserting hole and an axis center of the shaft holder inserting hole being non-coaxial shapes; and an elastic body interposed between a regular polygonal pyramid portion of the shaft holder and a regular polygonal pyramid portion of the shaft holder inserting hole, wherein a lower end side of the shaft holder and an inner portion of the shaft holder inserting hole are polygonal sectional shape portions and are engaged with each other; an inner peripheral surface of an upper portion of the shaft holder inserting hole and an outer peripheral surface of an upper portion of the shaft holder are respectively cylindrical portions; and lower sides of the cylindrical portions are regular polygonal pyramid portions that shrink toward a lower part.