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

The NANO TEC technology works by evenly distributing nano-sized particles in the vacant space between carbon fiber bundles, this highly increases the overall stiffness of the carbon composite fibers, and reduces the distortion of the frame.

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

Designed by computer simulation, FREE CORE is an innovative form of handles made using nano-nylon materials and molding techniques. It allows players to move more freely, swing smoother, and gives comfort to the hand.