Introduced in 1994. The Big Bertha Metal Wood with the War Bird soleplate incorporates the uniquely sculpted soleplate of a very successful utility club with an advanced internal weighting system that increases the degree of perimeter-weighting, making the club extra-forgiving. But the generosity on mis-hits is not the only benefit. A redistribution of mass provided by the War Bird soleplate and internal design refinements allow for a stronger flight pattern. The Big Bertha War Bird Driver head size is 195cc.