• The square head increases the club head's Moment of Inertia (MOI) or reduced twisting during off-center hits.
• High MOI face keep the ball straight and long down the fairway!
• Squared face geometry enlarges the hitting area and increases forgiveness.
• Moving the center of gravity farther back raises the launch angle thereby making the clubface easier to square for straighter drives.
• Variable face thickness in the face, sole and back wall controls clubhead deformation for maximum energy transfer, reduced spin and high launch angle.

See Golf Digest December 2006 issue for article on Nike™ and Callaway™ Square Golf Clubs.  Square golf clubs from Nike and Callaway will not be available until January 2007 and will cost $400 - $500, but you can try the new Integra I-Drive 460cc Square driver now and start hitting dead straight drives now. Everyone knows that a straight drive goes longer than a crooked drive.