Patent ID: 7214143

Claim:
A golf club head comprising: a body comprising a crown, a sole, and a front wall with an opening; and a striking plate insert positioned within the opening and attached to the body, the striking plate insert having a thickness in the range of 0.075 inch to 0.090 inch, the striking plate insert comprising a substrate base layer and a second layer, the substrate base layer composed of a material selected from the group consisting of titanium, titanium alloy, steel alloy, magnesium, magnesium alloy, aluminum and aluminum alloy, the substrate base layer having a thickness ranging from 0.035 inch to 0.060 inch, the second layer composed of a nickel-iron alloy material, the second layer having a thickness ranging from 0.005 inch to 0.050 inch, wherein the golf club head has a volume ranging from 250 cubic centimeters to 460 cubic centimeters and a mass ranging from 185 grams to 215 grams, and the golf club head has a coefficient of restitution ranging from 0.80 to 0.85.