New Shimano Ultegra Double FC-6600 Hollowtech ll 175mm Crank Arms, with chainring bolts ONLY. Out of box. 2x10-speed. Hollowtech ll integrated BB axle. 9/16" pedal threads. Use rings with a bcd of 130mm. 625 grams/1lb.6.0oz. Made in Japan quality from 2007. CS628.
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