Single roll for one badminton racket - 10m / 33’. Extensively used by top international players. Super thin 0.65mm diameter badminton string that provides industry leading repulsion power and crisp, clear hitting sounds. A combination of heat-resistant, high intensity fabric materials along with a unique Li-Ning 3D KINT technology makes the string more durable than other leading brands of 0.65mm string. Crisp, clean hitting sounds and feel.