Yonex astrox badminton rackets are built using with rotational generator system. the counter balanced head adapts to each shot, helping you to control the drive and attack the opposition with increased acceleration, steeper angle and power on the smash. astrox has joined forces with the durable grade (dg) technology to increase the durability of the badminton rackets. having made from super high elasticity high modulus graphite like the bestselling yonex voltric dg series, yonex astrox dg rackets will now be able to withstand higher tension up to 35lbs! this racket is also built with nanomesh neo which is a material that promotes quicker shaft take-back. this racket helps you to lead the attack with increased power and control. smash power up 7.1% (the difference between the initial speed and the final speed is minimized in order to be launched strongly) smash angle is 2.3° steeper *tested by yonex (measurements by swing robot)