Shaft Material: Ultra High Modulus Graphite+Nano ＋PYROFIL＋6.8 SHAFT 
Frame Material: Ultra High Modulus Graphite +Nano Fortify 
Weight / Grip Size: 3U(85-89.9gm) 4U(80-84.9gm) / G5 | String Tension LBS: 3U- 28lbs / 4U- 26lbs 
Stiffness: S ○●○○○ F , Balance： HH ○○●○○ HL , Holes: 76 (stringing pattern) 
By combining two cutting-edge technologies, PYROFIL and Nano Fortify, with a smaller racket frame and slimmer shaft, the JS-10 delivers a lightweight and crisp racket handling experience. The balanced and medium stiff frame, in conjunction with the slim shaft, makes this racket exceptionally fast, while the PYROFIL and Nano Fortify enables the more effective transfer of power for a more attacking game