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. SPECIFICATIONS CORE : Heat-Resistant,High Intensity Nylon Multifilament OUTER : Heat-Resistant, High Intensity Nylon DIAMETER : 0.65mm DURABILITY : 7/10 REPULSION POWER : 10/10 CONTROL : 8/10 HITTING SOUND : 9/10 SHOCK ABSORPTION : 7/10