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These Shimano GRX RX820-2 anodized aluminum chainrings are for specifically designed for use with GRX FC-RX820-2 2x 12-speed cranksets.
| Ring Position/Type | Inner |
| Tooth Count | 31 |
| Drivetrain Speeds | 12 |
| Round or Oval | Round |
| Chainring BCD | 80 |
| Material | Aluminum |
| Color | Black |
| Weight | 40 |
| Defined Color | Black |
| Number of Bolt Holes | 4-Bolt |