The Yonex Arcsaber Z-Slash Badminton Racket has been created to keep up with the increasing speed of the badminton world. The Yonex Arcsaber Z-Slash Badminton Racket will give you amazing smash speeds. In testing, a leading player achieved a smash speed of 414 km/h. The slim shaft & frame of the racket carries no extra weight. Cup. Stack Carbon Nanotube construction resembles multilayered cups uniformly stacked together providing increased durability & enhanced flexibility. High Modulus Graphite has been integrated into the side of the frame to produce a high repulsion power. The combination of Cup. Stack Carbon Nanotube" inside & " Super HMG" outside the frame.