Round BCD110x4 12-11s chainrings compatible with all ROTOR cranks using BCD110x4 spider and INspider power meter in combination with Shimano® 2x12s or 2x11s groupsets.In addition, these chainrings are also compatible with Shimano® Dura-Ace® FC-R9200-P, FC-R9200, FC-R9100 and Ultegra® FC-R8100, FC-R8000 cranksets, offering fast and precise shifting while keeping weight very low.ROTOR round chainrings come to complete the chainring range for those cyclists who have not yet decided to try Q RINGS oval chainrings.When you are looking for speed, functionality and lightness, the components of your bike have to reflect these needs. BCD: 110x4Weight: 141 g (50/34T)  |  110 g (50T)  |  31 g (34T)Chainline: 43.9 mm (standard axle)  |  46.4 mm (offset axle)Material: 7075-T6 aluminum alloy 100% CNC-machinedCranks compatible: All ROTOR cranks using spider BCD 110x4. All ROTOR cranks using INspider power meter. Shimano® Dura-Ace® FC-R9200-P, FC-R9200, FC-R9100. Shimano® Ultegra® FC-R8100, FC-R8000.Groupsets compatible: Shimano® 2x12s & 2x11s  |  SRAM® 2x11sChains compatible: 12s & 11s chains*Cranks arms, axle, chainring bolts, spider & power meter not included.**In some cases, to obtain a full compatibility between Shimano® Dura-Ace® FC-R9200-P, FC-R9200 or Ultegra® FC-R8100 cranks, Shimano® 2x12s groupsets and ROTOR chainrings could be necessary to install 0,5 mm washer in the right side of the axle.