4-Arm BCD 110 mm, specific for Shimano Dura-Ace FC-9200, Ultegra FC-8100, SRM Origin, and Rotor Power Meter INSpider cranks.
Compatible with Shimano Dura-Ace 9200, Ultegra 8100, Campagnolo 12-speed groupsets, and all previous 11-speed groupsets.
Not compatible with SRAM AXS 12 speed groups (choose the specific X-AXS chainrings).
96 / 28g
100% made in Italy.