Very lightweight OPI chainring spider (8 arm) made in 3D forging process and brought to completion by CNC milling. Besides the incredibly beautiful look the unusual design offers also excellent rigidity values. The Spider fits to all SI Hollowgram Cannondale cranks.

There's a formula Cannondale use to help their sponsored riders win races and take championship titles: System Integration. Cannondale shaves weight, improves stiffness, and use fewer moving parts than other competitors.
Fitting for derailleur: 10-speed ||| 11-speed