YONEX ASTROX 22 F Specs More Information Flex Medium Frame HM Graphite, NANOMETRIC DR, Tungsten Shaft HM Graphite, NANOMESH NEO Joint Built-in T-Joint Length 10 mm longer Weight / Grip 3F (Avg. 63g) G5 Stringing Advice 3F: 19 - 26 lbs Color(s) Black / Lime Item Code AX22F NANOMESH NEO Ensures a stronger more flexible frame, while increased shaft flex creates maximum power. NANOMETRIC DR Unique Technology NANOMETRIC DR is a new carbon material developed by Yonex based on our unique NANOSCIENCE technology. Created from a material originally developed for next generation space aviation by Toray Industries, Inc., this marks the first time it has been used within the racquet industry. By combining firm shuttle hold and high repulsion, NANOMETRIC DR puts the DUORA into a class of its own. AERO+BOX Frame Combines solid hitting feel and quick swing. ISOMETRIC Enlarged Sweet Spot ISOMETRICTM technology continues to help the world’s greatest players achieve global success. Developed over 30 years ago, the ISOMETRICTM design increases the sweet spot by 7%*. Compared to a conventional round frame, a square-shaped ISOMETRICTM racquet generates a larger sweet spot by optimizing the intersection of the main and cross strings. ISOMETRICTM delivers greater control without sacrificing power. ISOMETRICTM is a Trademark of Yonex CO., LTD.*Tested by Yonex Rotational Generator System Counterbalanced Weight Distribution By applying the counterbalance theory, weight is distributed throughout the grip end, frame top and the joint for maximum control. The transition to the next shot can be performed smoothly, with rapid succession. Control Support CAP Sharp Maneuverability The control support cap provides an 88% wider flat surface compared with an ordinary racquet for easier gripping, fast follow-through and the sharpest maneuverability. Slim Shaft Built-in T-Joint Increases strength between the frame and shaft eliminating head twist for more control.