The power-packed 3D CALIBAR 600 badminton uses the 3D Calibar Technology and features a high-tech, geometric frame design that greatly reduces air resistance. It provides you with higher swing speeds for stronger smashes and best-suits players who rely on peak power in their gameplay.†This racket is tuned for professional†players.This is a DRIVE Series racket featuring a stiffer shaft and highly elastic head design for rapid repulsion power. This series is a perfect match for fast players who display a dynamic game-style by switching between offense and defense at lightning speed.‚Äâ€