Through a special process, called "Trinity Drilling System", an aluminum bar is intricately CNC machined with three holes drilled through the length of the crank. The result is a triple hollow crank arm that enables ROTOR engineers to remove
the excess aluminum in the core while maintaining the structural strength of the crank. With this new system ROTOR has significantly improved the Hollowminum, they developed the technology for their Agilis Evo cranks.
No detail has been forgotten by ROTOR, even the 3D graphics on the crank is unique with its impressive graphics made by laser.