Yonex BG-80 Power badminton string is a combination of Yonex original high-intensity nylon multi-filament and high-modulus vectran provides a solid feeling and powerful smash. Excellent for hard hitter. Hard feeling, powerful, good tension retention, 0.68mm gauge. BG80 Power is a powerful badminton string with outstanding tension retention. High Modulus Vectran Fibre is coiled around the multifilament construction which reduces string movement and allows string to hold tension for longer.