Mizuno Acrospeed 001 4uG6 Badminton RacketMizuno Acrospeed 001 4uG6 Badminton Racquet Mizuno Acrospeed 001 FEATURES: TORQUE TECHNOLOGY (T9) When swinging, the probation of the forearm leads to the racket rotation in a twisting mostion. This motion is crucial for transferring the swinging power to the shuttlecock. "TORQUE TECHNOLOGY" is an advanced technology engineered for maximum power transmission. AEROGROOVE A shallow groove along the edge of the frame to enhance swing and stability.