Callaway Big Bertha Warbird Putter
The Callaway Big Bertha Warbird putter is reminiscent of the Warbird metalwoods. This unique mallet putter design increases the Moment of Inertia to reduce twisting on off-center hits. This high MOI is achieved through perimeter weighting allowed by the thin titanium face and the bore-through shaft. The hollow design also produces a distinct sound at impact.