The VICTOR X Hello Kitty DX KT I Drive X Series G5 4U badminton racket offers superior performance through its NANO TEC, SEVEN SIX 76, and FREE CORE technologies. NANO TEC increases the stiffness of the frame while SEVEN SIX 76 reduces tension loss and provides longer string life. FREE CORE boosts handling and allows the shaft to move more freely for smoother swings.