The box-shaped design effectively increases the stability and anti-torque, can stand higher string tension. 

The single-pass grommet hole construction creates less friction between strings, this effectively reduces tension loss, while extending string life.

Nano Fortify is composed by numerous tube-shaped carbon fiber.This technology can optimize high resilience.  With bending strength to generate high repulsion, which enhance attacking power on every single hit.

Inspired by military helicopter, multi-layered structure made by carbon fiber and composites, minimize material size, reinforce handling feel and performance at a critical standard.