'Q-RINGS' FIXED IN OCP 3, THESE ARE SPECIFICALLY DESIGNED TO FIT CRANKS WHICH HAVE CLEARANCE ISSUES.
THESE INCLUDE SHIMANO ULTEGRA110 BCD AND SRAM BB30 110 BCD CRANKS.
The Inner rings listed here are not specifically for OCP3 but dont need to be as the clearance issue is with the outer ring only..
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Q-Ring OCP3 50t Aero - 110 BCD - outer ring only
This Q-Rings will fit to Shimano Ultegra R7000 and 6700 series COMPACT cranks. Some other cranks may also require these rings.
This outer Q-Ring has arches to make clearance for the Drive side crank arm. This ring has Optimum Chainring Positioning number 3 only (OCP3).
ROTOR recommend ...