Absoluteblack premium cyclocross 1105 bolt pattern oval chainrings are designed for cranks like shimano dura ace fc7900 fc7800 ultegra fc6750 shimano 105 5750 and many more with 5 bolt fitting traction at a fraction of the price key features ideal for 1x conversion of your road crank narrow wide chainring cnc machined 7075 txxx aluminium long lasting construction compatibility all rotor cranks shimano dura ace 7900 7950 7800 ultegra 6750 shimano 105 5700 tiagra 4650 fs