Shimano DURA-ACE FC-R9200 36D ChainringShimano DURA-ACE FC-R9200 36T chainring12-speed chainring with a 110mm BCD and 4 asymmetrical bolts, specific for mounting on Dura-Ace R9200 series cranks. Valid to mount only in combination with a 52T chainring. It is also compatible with the Dura Ace power meter.BCD: 110. Actual weight: 31 gr. Shimano DURA-ACE FC-R9200 36D Chainring12-speed chainring with a 110mm BCD and 4 asymmetrical bolts, specific for mounting on Dura-Ace R9100 series cranks. Valid to mount only in combination with a 52T chainring. It is also compatible with the Dura Ace power meter.Characteristic:SERIE: DURA-ACE R9200 Series chain: ring type 36D Speed: 12 speed Chain line: 43.5 mm.Product Details:Plate type: Double FC-R9200, FC-R9200-P DURA-ACE R9200 Series