Built for golfers who want help minimizing mistakes off the tee, the 400cc Forged Titanium Driver has an effective hitting area (EHA or Sweet Spot) three times as large as the 275cc model and 50% bigger than the 350cc. The thin wall construction exclusive to the beta-titanium forging process generates high velocity drives and the bigger sweet spot promotes distance through forgiveness. Nike proprietary Beta-Titanium clubface is thinner, stronger and lighter resulting in spring effect at impact. Optimal launch angle, ball speed and spin maximize length and accuracy. Exceptional forgiveness through our largest sweet spot and precise forging process.