Oversized hub body, made of CNC 7075T aluminium. Straight Pull type spoke mount for greater wheel stiffness and better aerodynamics. Largest, highest precision Japanese sealed bearings. With minimal friction that significantly increases durability. Very robust 9mm rear axle, with aluminum core and classic oversize three-pawl mechanism. The core can be exchanged for the Campagnolo system without the need for other modifications. Shimano core with 2 larger diameter bearings. 2:1 spoke pattern.