Andy Roddick's official racquet since the 2006 Australian Open. This brand new racquet offers all the power and versatility of the Pure Drive with even greater performance capabilities. Cortex system filters out vibrations which interfere with feel, in order to enhance the feel of the ball. Head Size 100 sq. in. 645 sq. cm. Length 27.5 inches 70 cm Strung Weight 11.7oz 332g Balance 5pts Head Light Swingweight 342 Stiffness 71 Beam Width 22 26 23 Tapered Beam Composition Graphite Kevlar Power Level Low Medium Swing Speed Moderate Fast Grip Type Syntec Grip String Pattern 16 Mains 19 Crosses Mains skip 8T,8H One Piece No shared holes String Tension 55 66 pounds