The Yonex Astrox 100 ZX 4U5 is typical offensive style badminton racket designed with attacking expert players in mind. This hard-hitting racket boasts the Namd graphite material to expand power potential by storing energy during flex & instantly releasing it on shuttle impact with explosive power behind the stroke. in addition, the head of the racket is isometric which means higher level of precision & consistency without sacrificing any power. The head utilises also a freshened up grommet pattern, & takes advantage of the Rotational Generator System which allows for taking smooth consistent shots in rapid succession thanks to the counterbalanced weight distribution. The racket generates less vibrations & provides superior stability on impacts, thanks to the Solid Feel Core, & it is fitted with a slim-style, high performance Rexis shaft. The Astrox ZX is shipped pre-strung with the D637-A7 string.