The Big Bertha ERC II Forged Titanium Driver features an innovative clubhead with a hot-forged cup-face design and a head size of 335cc depending on the loft. The combination of Variable Face Thickness (VFT) Technology and forged titanium enabled Callaway Golf to make the clubface remarkably thin without sacrificing durability.
NOTE: The ERC II Driver exceeds the USGA limit for COR and has been ruled non-conforming.