The Shimano GRX FC-RX810-2 chainring is for a 48/31t crankset, which provides a wide gear range suitable for off-road riding and cyclocross. The chainring has a 110mm bolt circle diameter and is designed to be compatible with Shimano's GRX series components. If you need to replace the chainring on your GRX FC-RX810-2 crankset, and use the chainring, mare sure your inner ring is a 31t. Only 31t inner chainrings are compatible with the 48t outer rings.
The Shimano GRX FC-RX810-2 chainring is for a 48/31t crankset, which provides a wide gear range suitable for off-road riding and cyclocross. The chainring has a 110mm bolt circle diameter and is designed to be compatible with Shimano's GRX series components. If you need to replace the chainring on your GRX FC-RX810-2 crankset, and use the chainring, mare sure your inner ring is a 31t. Only 31t inner chainrings are compatible with the 48t outer rings.