Weight Unstrung (+/- 5g) : 317 Head Size (sq. in) : 99 /100 Beam Width (mm): 23-26-23 Balance (+/- 5mm): 330 String Pattern: 16x19 Length (inches): 27 Stringing Tension Range (lbs): 50-59 Composition: Graphite Product Details Spin - Nail every shot and keep your opponent running between the four corners of the court. The Pure Aero Rafa offers unparalleled results. Thanks to its impressive stability, this tennis racket allows you to fully engage with the ball. Featuring the Woofer System, a head-heavy balance, and a more open string pattern than the Pure Aero, this tennis racket will give you more weight behind the ball to push your opponent back and dominate every rally Power - Send your rival back behind the baseline and boost your power with the new Pure Aero Rafa tennis racket. Specially designed with a stiffer frame and a more head-heavy balance, this racket will help you set the pace on the court with powerful shots Feel - A blast of sound, radiating raw power, for greater sensations on impact Aeromodular - A specially developed aerodynamic frame to increase racket head speed and generate more spin FSI Spin Technology - Optimized string pattern for maximum spin. The Woofer System offers maximum spin with a perfect feel, resulting from extended contact between the ball and the strings