| http://www.w3.org/ns/prov#value | - A method for adjusting a center of gravity of a golf club head after its manufacture, the golf club including a head comprising a hollow shell having a plurality of thin walls that collectively form a club head, the club head including a face for striking a golf ball, a heel portion, a toe portion, a back portion and a sole and having an original center of gravity prior to addition of any weights,
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