The NANOFLARE 1000 series is designed for players looking for additional swing speed and swing with great maneuverability. The new "Wide Profile Frame" combined with the "Sonic Flare" system generates high rebound force on impact, while reducing air resistance.Specification:Stiffness - Very stiffFrame - HM Graphite, NANOMETRIC DR, M40X, EX-HYPER MGShaft - HM Graphite / Ultra PE FIBERJoint - NEW Built-in T-JointTechnologies:NANOMETRIC DR - NANOMETRIC DR is a new carbon material developed by Yonex based on the unique NANOSCIENCE technology. Created from a material originally developed for next-generation aerospace by Toray Industries, Inc., it was first used in the rocket sports industry. Combining powerful shuttle hold and high push-off, NANOMETRIC DR puts the DUORA in a class of its own.AERO FRAME - AERO Frame reduces air resistance and allows for a faster swing.COMPACT FRAME - To balance the heavy racket head, the frame has been made smaller to maintain the fast swing required by advanced players. By reducing air resistance, the feeling of head weight decreases and the speed of operating the racket increases.ISOMETRIC - The isometric shape of the racket head maximizes the area of intersection of the main and cross strings, thus increasing the active hitting area even for off-center hits.M40X - A very strong yet flexible next-generation carbon fiber developed by Toray Industries, Inc.SOLID FEEL CORE - The built-in solid core dampens various harmful vibrations upon impact.SONIC FLARE SYSTEM - Maximum acceleration. Revolutionary new TORAYCAR M40X graphite material and SUPER HMG provide unrivaled power and stability for maximum acceleration.ULTRA PE FIBER - The shaft is constructed from “Ultra PEF” – an ultra-polyethylene fiber – that is light enough to float on water while still being able to withstand enormous forces. These features allow for maximum shock absorption.SLIM SHAFTS - The thinnest racket ever produced by YONEX significantly reduces air resistance while ensuring maximum feel.ENERGY BOOST CAP - The new shape allows the shaft to flex, providing maximum racket stability, preventing shaft twist and increasing control.NEW BUILT-IN-T-JOINT - The lightweight T-Joint increases the stability of the shuttle on the strings, maximizing power and control.EX-HMG -Provides more power for all shots.SPEED-ASSIST BUMPER - SPEED-ASSIST BUMPER is a bonded guide containing a very stiff material that is resistant to deformation. They are attached to the bottom of the frame to improve the operation of the tension.