Patent ID: 8348782

Claim:
A correlated set of golf club heads comprising: a first golf club head having a first loft angle and a second golf club head having a second loft angle that is different from the first loft angle, each of the first golf club head and the second golf club head including: a strike face; a perimeter-weighting element behind the strike face, the perimeter weighting element including an inner peripheral wall having at least one of a top surface, a sole surface, a heel surface, and a toe surface, the inner peripheral wall delimiting a cavity having a base surface; and a first insert in the cavity the first insert comprising: a primary element associated with the base surface, and at least one secondary element pivotably coupled with the primary element, by a passive flexural coupling configured to exert a negligible biasing force on the primary and secondary elements as the primary and secondary elements are pivoted relative to each other, the flexural coupling comprising a recessed region, and the at least one secondary element associated with at least one of the top surface, the sole surface, the toe surface, and the heel surface.