Wilson Blade 98S Spin Effect Technology Tennis Racquet Wilson Spin Effect Technology reduces the number of cross strings to produce more spin without having to change your swing Racquet comes unstrung and a racquet cover is not included The extra spin provided by Spin Effect Technology gives the player 2 additional Inch of net clearance and allows the ball to drop quicker, making the court seem 12 Inch longer The choice of many Next Generation players, the Blade family is the next big thing in the future of control-racquets Amplified Technology reduces harsh vibrations in the handle and adds power