Patent ID: 7628711

Claim:
A golf club head, comprising: a head body formed with a cavity having an opening at an outer surface of said head body; and a counterweight unit fitted in said cavity and including a sleeve body and an insert body; said sleeve body having a first end face, a second end face opposite to said first end face and extending to the depth of said cavity, first and second cavities adjoining each other and respectively extending through said first and second end faces, and first and second inner walls respectively confining said first and second cavities, said first inner wall having at least one first corner wherein said first corner extends to said first end face, said second inner wall having at least one second corner, said second corner being out of alignment wherein said second corner extends to said second end face with said first corner, said sleeve body further having at least one shoulder face which is formed at a junction of said first and second cavities in the vicinity of said second corner and which faces said second end face; said insert body including an insert portion removably inserted into said sleeve body, and an abutting portion extending outward from said sleeve body and abutting against said first end face, said insert portion having at least one flange that engages said second corner and that has a stop face abutting against said shoulder face.