The Aero Box Frame design gives you solid swinging power for smashes and better shuttle impact. Surprising opponent with drop shot is very easy. Trick shot is also very good as the racket is easy to control. With less energy, smashing is as powerful. The new Reinforced Structure Frame is adopted in the frame in order to make the frame Ultra High Strength & Stiffness. As a result it can handle string tension of up to 38lbs. Apacs Super Series Master is an even balanced frame racket. This provides a good balance between the power to smash, plus good control and defend smashes. The racket medium flex shaft will deliver balance between power and control.