0.69mm x 200m. An original Carbon nano Fiber that gives powerful repulsion combined with high durability.

Suited for players who look for resilience to increase speed and durability for longer lasting string. An excellent string for Yonex NanoSpeed line badminton racquets.

The YONEX Carbon Nano Fiber construction which has four times more elasticity than a carbon nanotube combined with a high-strength nanofiber coating, minimizes notching of the string at intersecting points.

This construction achieves increased durability and high repulsion power.