Patent ID: 7850542

Claim:
A wood-type golf club comprising: a wood-type golf club head, the wood-type golf club head having a volume ranging from 400 cubic centimeters to 470 cubic centimeters, a mass ranging from 210 grams to 250 grams, and a moment of inertia about the Izz axis through the center of gravity of the golf club head ranging from 4700 grams-centimeters squared to 6000 grams-centimeters squared, the wood-type golf club head having a distance from a front wall to a rear edge ranging from 2.0 inches to 5.0 inches; and a shaft connected to a heel end of the wood-type golf club head, the shaft having a mass ranging from 50 grams to 90 grams; wherein an inertia ratio of the moment of inertia about the Izz axis of the wood-type golf club head divided by the moment of inertia about the Iyy axis of the wood-type golf club is greater than 0.0019.