This lightweight and manoeuvrable racket from black knight is packed with technologies delivering a fast and powerful frame the ion quartz psx squash racket has a 500cm2 775in2 head and features an aerodynamic frame thanks to the thin k technology it incorporates the power surge technology providing extra power and stiffness and the nano crystalline technology nct for fine tuning of the weight and balance as well as greater control for hard hitters improved performance is guaranteed by t