Head Speed Pro is the heavier and most precise racquet in the Speed series. Having a weight of 310 gm unstrung and an 18X20 string pattern, the racquet is accurate and packs a big punch while retaining the soft and comfortable feel. Racquet has been upgraded with Hy-Bor a state-of-the-art material mix mainly used in the high-tech aerospace industry to improve stability and ball feel on impact. Auxetic 2.0 technology in the handle and yoke enhances the connected feel to the ball. Metallic colors and a matte finish put a fresh and contemporary twist on the series iconic black and white design. Intermediate and advanced players with full swings will enjoy the easy precision and comfort of this racquet SPECS: Head Size: 100 sq in / 645 sq cm Length: 27 in / 68.6 cm Unstrung Weight: 10.9 oz / 310 gm Unstrung Balance: 8 pts HL / 315 mm Strung Weight: 11.5 oz / 326 gm Strung Balance: 6 pts HL / 320 mm Beam Width: 23 mm / 23 mm / 23 mm String Pattern: 18 Mains / 20 Crosses Mains skip: 8T, 10T, 8H, 10H String Tension: 48 - 57 pounds