Wheels Manufacturing BBRIGHT BB30A and PF30A Adaptor for 24mm Spindle Cranks adapts 24mm spindle cranks (Shimano, FSA, etc.) to most BBRight frames. Compatible with 2011-2012 Cervelo models R3, R3 Team, S5, S5 Team, S5 VWD, R5ca and R5 VWD. – Also adapts Cannondale BB30a and PF30a frames to 24mm spindle cranks (Shimano, FSA, etc.). – Includes eight 0.7mm shims for fine-tuning chain line – Machined engineering-grade Delrin – 48g/pr