From the description:
The Rotor patented
OCP System enables you to customize the position your Q-Rings to suit your individual riding habits, body geometry, strength and position on the bike.
Emphasis mine.
http://www.rotorcranksusa.com/frequentquestions.shtml
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Spectrum Ti Super | Landshark Roadshark | Serotta Colorado | Gunnar Crosshairs | Trek 9800 | Santana fillet brazed tandem | K2 Easy Roller | Dawes (BD) Bullseye 1x1