Badminton String is a combination of Yonex original high-intensity nylon multi-filament and high-modulus vectran provides a solid feeling and powerful smash. High-modulus Vectran fiber is an advanced material wrapped around a strong multifilament core of BG80 for tension retaining. It’s ultra-thin gauge of 0.68mm gives players greater power for smashes. Excellent for hard hitter. The 200 meter reel will allow you to string 20 to 23 rackets depending on usage and depending on your stringing technique.