Patent ID: 7559850

Claim:
A set of iron-type golf clubs comprising: at least one long iron comprising a first hitting face, a first rear face having a first channel formed therein, and a first insert sandwiched in the first channel, behind the first hitting face, having a first length L l and a first volume V l and a first mass M l ; at least one mid iron comprising a second hitting face, a second rear face having a second channel formed therein, and a second insert disposed behind the second hitting face having a second length L 2 and second volume V 2 and a second mass M 2 ; and at least one short iron comprising a third hitting face, a third rear face having a third channel formed therein, and a third insert disposed behind the third hitting face having a third length L 3 and a third volume V 3 and a third mass M 3, wherein L 1 >L 2 >L 3 and V 1 >V 2 >V 3 and M 1 >M 2 >M 3 and the sole width decreases between 0.725 inches and 0.635 inches in the set from the at least one long iron to the at least one short iron, and wherein each insert fills at least a majority of the respective channel to provide a consistent aesthetic and feel throughout the set.