Yonex RQ Graphrex Ace Tennis Racquet The new RQ Graphrex ACE tennis racquet provides a solid introduction to the game for beginning players; enhancing your play with technology. This racquet has an ISOMETRIC head shape for a larger sweet spot, which means improved accuracy for you and higher spin potential. This racquet which will give you ultimate stability and playability during your first forays into the game. ISOMETRIC TECHNOLOGY:- The ISOMETRIC head shape is a unique and evolutionary breakthrough technology in racquet design. In conventional racquets, the sweet spot is located where main strings and cross strings meet. The YONEX ISOMETRIC head shape allows us to increase the number of main and cross strings that meet in the centre of the racquet to produce a sweet spot which gives a 7% more effective hitting area for you to make match winning shots. IPS (Integrated Power Weight System) TECHNOLOGY:- YONEX I.P.S. (Integrated Power Weight System) technology places weight at the 3 and 9 o’clock positions of the frame to give the face a greater moment of inertia. Shockless Grommet TECHNOLOGY YONEX integrates Shockless Grommets at the side and bottom of the frame to minimize muscle fatigue during long matches. Provides a soft feel at impact plus the ability to protect the wrist, forearm and elbow by absorbing shock.