Product Specification:  COLOR Light Rose Violet Weight / Grip Size 4U / G6 String Tension LBS 4U:≦28 lbs(12.5Kg) Frame Material High Resilience Graphite + HARD CORED TECHNOLOGY Shaft Material High Resilience Graphite + PYROFIL + 6.8 SHAFT Made In China Product Technology:   NANO TEC:   The NANO TEC technology works by evenly distributing nano-sized particles in the vacant space between carbon fiber bundles, this highly increases the overall stiffness of the carbon composite fibers, and reduces the distortion of the frame. SEVEN SIX:   The single-pass grommet hole construction creates less friction between strings, this effectively reduces tension loss, while extending string life. AERO-SWORD Innovative technology combining the two poular frame structure SWORD and AERODYNAMIC, the AERO-SWORD can efficiently reduce air resistance and allowing a faster and greater hitback. PYROFIL PYROFIL carbon fiber and its composites, are advanced high-performance material from Japan.  The characteristic of high intensity bonds ultra-light offers racket excellent shock-absorption and enhances control. Hard Cored Technology Inspired by military helicopter, multi-layered structure made by carbon fiber and composites, minimize material size, reinforce handling feel and performance at a critical standard. JS12FTDJ| JS-12FTD-J | JS 12FTD J | JS12-FTD J | jetspeed | jet speed | badminton | racquet | js | | 極速 | 勝利 |