When a Powersphere club head strikes a ball, the powerful energy shockwave begins its surge toward the back of the club head, where it impacts the Powersphere dome. The energy wave is immediately reflected back across the entire face of the club, amplifying the power transmitted to the ball -no matter where the ball makes contact with the face of the club. The result is longer, more accurate drives. Choose from a variety of lofts and flexes to suit your game.These clubs have been professionally refurbished with the highest quality tools to give each club a like new luster. Don't pay retail for a driver, stop at Overstock.com for all your golfing needs.